Humble coin toss thrust to heart of multiverse debate

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In-depth 2012: The best long reads of the year

Read more: "2013 Smart Guide: 10 ideas that will shape the year"

Dig deeper, look closer and think harder – these are the goals of New Scientist's in-depth articles. Each one is perfect for saving in your favourite read-it-later app and curling up in front of a glowing tablet for a good long read.

These are our editors' picks of our best features of the year, and all are prime examples of the amazing breadth of big ideas that were ripe for the tackling in 2012. When you have finished digesting these readable meals, visit our in-depth articles archive if you're hungry for more.

Richard Webb: "You might not have heard of the algorithm that runs the world." I certainly hadn't, or that its mathematical foundations are starting to look a little wobbly. An eye-opening examination of how seemingly abstruse mathematics is in fact deeply embedded in modern life: "The algorithm that runs the world"

Sally Adee: Gastric bypass surgery is the best surgery you're not getting, said Dr Oz on his popular medical advice show in the US. Because of enthusiasm from people like him, this operation has become massively popular – but by whimsically hacking at our stomach, might we might be messing with a system far more complicated than anyone really understands? Samantha Murphy had the surgery and began to realise that losing 45 kilograms could come with some profound neurological trade-offs: "Change your stomach, change your brain"

Michael Le Page: Nowadays most people either haven't heard of the 1970 book The Limits to Growth, or believe – wrongly – that the research it was based on has been discredited. But the main message of Limits is perhaps more relevant than ever – that a delayed response to mounting environmental problems leads to catastrophe further down the line: "Boom and doom: Revisiting prophecies of collapse"

Richard Fisher: This is a simple story about a scientific mystery. Strange rumbles, whistles and blasts have been reported all over the world for centuries. In New York state, they are called "Seneca guns"; in the Italian Apennines they are described as brontidi, which means thunder-like; in Japan they are yan; and along the coast of Belgium they are called mistpouffers – or fog belches. Yet the cause is often unexplained – what on Earth could be behind them? "Mystery booms: The source of a worldwide sonic enigma"

Valerie Jamieson: It's been a sensational year for particle physics, but the Higgs boson isn't the only fascinating particle in town. Meet 11 more particles that change our understanding of the subatomic world: "11 particles for 11 physics puzzles"

David Robson: What is the secret of the legendary "flow state" that seems to mark out genius in everyone from piano virtuosos to tennis champions? With the latest brain stimulation techniques, it may soon be within everyone's reach, and Sally Adee writes with panache as she describes her own use of the technology during a terrifying marksmanship training session. This has everything I want to read in a story – drama, a revolutionary idea and some practical advice for anyone to try at home: "Zap your brain into the zone: Fast track to pure focus"

Graham Lawton: The writer of this article, Christopher Kemp, is a self-confessed lover of marginalia – nooks and crannies of science that are often overlooked. But as this beautifully written story reveals, those nooks and crannies often contain rich and fascinating material. Material, in fact, like ambergris: "Heaven scent: The grey gold from a sperm whale's gut"

Ben Crystall: Many people may remember the wonder material Starlite from an episode of BBC TV's Tomorrow's World – it seemed to have a miraculous ability to withstand fire and heat. So what happened to it? In this feature Richard Fisher uncovers the strange tale of Starlite and its eccentric inventor Maurice Ward, and on the way reveals fascinating details about Ward and his creation. And though Ward is dead, the story may not be over – it now looks like Starlite could get a second chance… "The power of cool: Whatever became of Starlite?"

Clare Wilson: I enjoyed working on this feature the most this year because to me it truly represents the future of medicine. New Scientist often predicts that some new medicine or technology will be available in five years' time. When it comes to using gene therapies or stem cell therapies on babies in the womb – the subject of this feature – the timeline is probably more uncertain, yet I don't see how anyone can doubt that some day it will happen: "Fetal healing: Curing congenital diseases in the womb"

If you would like to reuse any content from New Scientist, either in print or online, please contact the syndication department first for permission. New Scientist does not own rights to photos, but there are a variety of licensing options available for use of articles and graphics we own the copyright to.

All comments should respect the New Scientist House Rules. If you think a particular comment breaks these rules then please use the "Report" link in that comment to report it to us.

If you are having a technical problem posting a comment, please contact technical support.

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2012 review: The year in health science

Read more: "2013 Smart Guide: 10 ideas that will shape the year"

The first half of 2012 will be remembered for the saga over whether or not to publish controversial research involving versions of the H5N1 bird flu virus engineered to spread more easily in mammals. In the end openness won out, and both contentious studies did finally see the light of day.

This was also the year that saw the battle to eradicate polio reach its crucial endgame – just as another problem, in the form of totally drug resistant tuberculosis, reared its head.

Away from infectious disease, 2012 brought us a theory on the link between Tutankhamun, epilepsy and the first monotheistic religion, and an insight into the perils of premature ageing in Italy's ominously named Triangle of Death. Here are 10 more of the year's memorable stories.

Babies are born dirty, with a gutful of bacteria
Far from being sterile, babies come complete with an army of bacteria. The finding could have implications for gut disorders and our health in general

Forensic failure: 'Miscarriages of justice will occur'
Our survey of UK forensic scientists reveals that many are concerned that closure of the Forensic Science Service will lead to miscarriages of justice

Scandal of an underfunded and undertreated cancer
Lung cancer in those who have never smoked is on the rise – but they face the same stigma as their smoking counterparts

Ovarian stem cells discovered in humans
Stem cells capable of forming new eggs could promise limitless eggs for IVF treatments, and the rejuvenation of older eggs

Paralysis breakthrough: spinal cord damage repaired
An implant helping paralysed people stand unaided suggests the spinal cord is able to recover function years after severe damage

A real fMRI high: My ecstasy brain scan
Graham Lawton reports the highs, lows and psychedelic purple doors involved in taking MDMA while having his brain scanned

You may carry cells from siblings, aunts and uncles
Male cells found in the umbilical cord blood of baby girls with older brothers suggests fetal cells cross between mother and baby more than once thought

Can we deter athletes who self-harm to win?
The Paralympics may encourage a debate on a dangerous practice – and potential ways to prevent it

First non-hormonal male 'pill' prevents pregnancy
A non-hormonal drug that temporarily reverses male fertility appears to have few side effects in mice

Mining MRSA genetic code halts superbug outbreak
Whole genome sequencing of an MRSA outbreak has identified the person who unwittingly spread the bacteria around a hospital, stopping further infection

If you would like to reuse any content from New Scientist, either in print or online, please contact the syndication department first for permission. New Scientist does not own rights to photos, but there are a variety of licensing options available for use of articles and graphics we own the copyright to.

All comments should respect the New Scientist House Rules. If you think a particular comment breaks these rules then please use the "Report" link in that comment to report it to us.

If you are having a technical problem posting a comment, please contact technical support.

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Today on New Scientist: 28 December 2012

Best videos of 2012: Rare view of Challenger tragedy

Watch a rare amateur video of the Challenger explosion, our most-viewed video of the year

Strong jet stream super-charged US Christmas storms

Record snowfall and dozens of tornadoes snarled holiday travel as a powerful winter storm plowed across much of the US, while rainstorms battered the UK

2012 review: The year in life science

The year's biggest stories in life science, including James Cameron's descent into the Mariana trench and efforts to break into Antarctica's buried lakes

Superstorm lessons for adapting to climate change

As the post-Sandy rebuild gets under way, coastal cities around the world will be watching

Best videos of 2012: First MRI movie of childbirth

Watch a unique view of a baby's birth, at number 2 in our countdown of the year's top science videos

Fleadom or death: Reviving the glorious flea circus

The parasite-based sideshows were almost done for by the domestic vacuum cleaner - but they are bouncing back, finds Graham Lawton

Approval for gene-modified salmon spawns controversy

Apparently months late, US regulators have declared genetically engineered fish safe to farm and eat, but final approval could be some way off

Best videos of 2012: New aircraft flies inside out

Watch a novel flying machine use a unique mechanism to propel itself, at number 3 in our countdown of the top videos of the year

2012 review: The year in technology

The year's biggest stories in technology, including Kinect devices that may spot signs of autism and controlling a robot by the power of thought

Superdoodles: The science of scribbling

Far from being a distraction, doodling has an important purpose - and you can harness it

2013 Smart Guide: Wave goodbye to the mouse

The Leap, a 3D motion control device set to launch next year, will let you control your computer with touch-free hand and finger movements

Read More..

Today on New Scientist: 28 December 2012

Best videos of 2012: Rare view of Challenger tragedy

Watch a rare amateur video of the Challenger explosion, our most-viewed video of the year

Strong jet stream super-charged US Christmas storms

Record snowfall and dozens of tornadoes snarled holiday travel as a powerful winter storm plowed across much of the US, while rainstorms battered the UK

2012 review: The year in life science

The year's biggest stories in life science, including James Cameron's descent into the Mariana trench and efforts to break into Antarctica's buried lakes

Superstorm lessons for adapting to climate change

As the post-Sandy rebuild gets under way, coastal cities around the world will be watching

Best videos of 2012: First MRI movie of childbirth

Watch a unique view of a baby's birth, at number 2 in our countdown of the year's top science videos

Fleadom or death: Reviving the glorious flea circus

The parasite-based sideshows were almost done for by the domestic vacuum cleaner - but they are bouncing back, finds Graham Lawton

Approval for gene-modified salmon spawns controversy

Apparently months late, US regulators have declared genetically engineered fish safe to farm and eat, but final approval could be some way off

Best videos of 2012: New aircraft flies inside out

Watch a novel flying machine use a unique mechanism to propel itself, at number 3 in our countdown of the top videos of the year

2012 review: The year in technology

The year's biggest stories in technology, including Kinect devices that may spot signs of autism and controlling a robot by the power of thought

Superdoodles: The science of scribbling

Far from being a distraction, doodling has an important purpose - and you can harness it

2013 Smart Guide: Wave goodbye to the mouse

The Leap, a 3D motion control device set to launch next year, will let you control your computer with touch-free hand and finger movements

Read More..

Today on New Scientist: 27 December 2012

Best videos of 2012: Spiderman skin stops a bullet

Watch reinforced skin stop a speeding bullet, at number 4 in our countdown of the top videos of the year

Gastrophysics: Some said 'more', others said 'meh'

Network theorists model everything from internet traffic to disease spread. But can they tease out titillating new taste combos? New Scientist gets cooking

Best videos of 2012: Sea lice reduce pig to bones

Watch a microscopic mob devour a pig carcass underwater, as we reach number 5 in our best videos of the year.

2012 review: The year in space

A Mars rover's daredevil landing, a private space-flight boom, and a man leaping from the stratosphere were among the top space news events this year

Photo puzzle: Can you make the connection?

Correctly match up 16 pairs of science-inspired images and enter a draw to win a state-of-the-art Olympus E-PL5 digital camera

Shiver me timbers: The coolest warship ever made

Unsinkable and bulletproof, battleships made from icebergs were the great hope of the second world war, says Stephen Battersby

2013 Smart Guide: Next-generation video games

The upcoming round of consoles promises to deliver a far more immersive video-gaming experience, with super-high-definition and multi-screen action

Dangerous liaisons: Animals' tangled love lives

The surprising mate choices of certain animals are forcing us to reconsider our views of evolutionary theory

Three gods: The hardest logic puzzle ever

Tackle this logisticians' parlour game and you may be a bit closer to understanding the nature of truth itself, says Richard Webb

2012 review: The year in environment

From the devastation wrought by superstorm Sandy to vanishing Arctic sea ice, we round up the biggest environment stories of the year

Feast for the senses: Cook up a master dish

Trick your dinner guests into thinking you're a master chef by manipulating all their senses

2013 Smart Guide: Hot computing for a cool billion

Six mega-projects, from a supercomputer brain simulation to a real-life SimCity on a global scale, are vying for two prizes, each worth $1 billion

New Scientist 2012 holiday quiz

Anatomical incongruities, why men are like fruit flies, a boson by any other name, and much more in our end-of-year quiz

2013 Smart Guide: Supercomet to outshine the moon

A gas cloud crashing into the black hole at the centre of the galaxy and a naked-eye comet promise celestial fireworks in 2013

Dangerous liaisons: Fatal animal attractions

Humans aren't the only animals that can run into trouble when choosing a mate, discovers David Robson

2012 review: Zoologger's 12 beasts of Christmas

Zoologger is our weekly column highlighting extraordinary animals - and occasionally other organisms - from around the world. Here are this year's 12 best

Prehistoric cinema: A silver screen on the cave wall

With cartoon frescoes, shadow theatre and a rudimentary form of animation, our ancestors knew how to bring their stories to life, says Catherine Brahic

Review of 2012: The year's biggest news at a glance

Halt to bird flu experiments, Greece's economic crisis, the Stuxnet computer worm, Curiosity arrives on Mars, and more

How does a traffic cop ticket a driverless car?

Rapid progress means self-driving cars are in the fast lane to consumer reality. Is the law up to speed too, asks legal expert Bryant Walker Smith

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Three gods: The hardest logic puzzle ever

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New Scientist 2012 holiday quiz

Continue reading page

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THIS was the year we held our breath in almost unbearable anticipation while we waited to see whether physicists at the Large Hadron Collider would finally get a clear view of the Higgs boson, so tantalisingly hinted at last December. Going a bit blue, we held on through March when one of the LHC's detectors seemed to lose sight of the thing, before exhaling in a puff of almost-resolution in July, when researchers announced that the data added up to a fairly confident pretty-much-actual-discovery of the particle.

Early indications were that it might be a weird and wonderful variety of the Higgs, prompting a collective gasp of excitement. That was followed by a synchronised sigh of mild disappointment when later data implied that it was probably the most boring possible version after all, and not a strange entity pointing the way to new dimensions and the true nature of dark matter. Prepare yourself for another puff or two as the big story moves on next year.

This respirational rollercoaster might be running a bit too slowly to supply enough oxygen to the brain of a New Scientist reader, so we have taken care to provide more frequent oohs and aahs using less momentous revelations. See how many of the following unfundamental discoveries you can distinguish from the truth-free mimics that crowd parasitically around them.

1. Which of these anatomical incongruities of the animal kingdom did we describe on 14 July?

• a) A fish, found in a canal in Vietnam, that wears its genitals under its mouth
• b) A frog, found in a puddle in Peru, that has no spleen
• c) A lizard, found in a cave in Indonesia, that has four left feet
• d) A cat, found in a tree in northern England, that has eight extra teeth

2. "A sprout by any other name would taste as foul." So wrote William Shakespeare in his diary on 25 December 1598, setting off the centuries of slightly unjust ridicule experienced by this routinely over-cooked vegetable. But which forbiddingly named veg did we report on 7 July as having more health-giving power than the sprout, its active ingredient being trialled as a treatment for prostate cancer?

• a) Poison celery
• b) Murder beans
• c) Inconvenience potatoes
• d) Death carrots

3. Scientists often like to say they are opening a new window on things. Usually that is a metaphor, but on 10 November we reported on a more literal innovation in the fenestral realm. It was:

• a) A perspex peephole set in the nest of the fearsome Japanese giant hornet, to reveal its domestic habits
• b) A glass porthole implanted in the abdomen of a mouse, to reveal the process of tumour metastasis
• c) A crystal portal in the inner vessel of an experimental thorium reactor, to reveal its nuclear fires to the naked eye
• d) A small window high on the wall of a basement office in the Princeton physics department, to reveal a small patch of sky to postgraduate students who have not been outside for seven years

4. On 10 March we described a new material for violin strings, said to produce a brilliant and complex sound richer than that of catgut. What makes up these super strings?

• a) Mousegut
• b) Spider silk
• c) Braided carbon nanotubes
• d) An alloy of yttrium and ytterbium

5. While the peril of climate change looms inexorably larger, in this festive-for-some season we might take a minute to look on the bright side. On 17 March we reported on one benefit of global warming, which might make life better for some people for a while. It was:

• a) Receding Arctic sea ice will make it easier to lay undersea cables to boost internet speeds
• b) Increasing temperatures mean that Greenlanders can soon start making their own wine
• c) Rising sea levels could allow a string of new beach resorts to open in the impoverished country of Chad
• d) More acidic seawater will add a pleasant tang to the salt water taffy sweets made in Atlantic City

6. In Alaska's Glacier Bay national park, the brown bear in the photo (above, right) is doing something never before witnessed among bearkind, as we revealed on 10 March. Is it:

• a) Making a phonecall?
• b) Gnawing at a piece of whalebone to dislodge a rotten tooth?
• c) Scratching itself with a barnacle-covered stone tool?
• d) Cracking oysters on its jaw?

7. Men have much in common with fruit flies, as we revealed on 24 March. When the sexual advances of a male fruit fly are rejected, he may respond by:

• a) Whining
• b) Hitting the booze
• c) Jumping off a tall building
• d) Hovering around the choosy female long after all hope is lost

8. While great Higgsian things were happening at the LHC, scientists puzzled over a newly urgent question: what should we call the boson? Peter Higgs wasn't the only physicist to predict its existence, and some have suggested that the particle's name should also include those other theorists or perhaps reflect some other aspect of the particle. Which of the following is a real suggestion that we reported on 24 March?

Continue reading page

|1

|2

If you would like to reuse any content from New Scientist, either in print or online, please contact the syndication department first for permission. New Scientist does not own rights to photos, but there are a variety of licensing options available for use of articles and graphics we own the copyright to.

All comments should respect the New Scientist House Rules. If you think a particular comment breaks these rules then please use the "Report" link in that comment to report it to us.

If you are having a technical problem posting a comment, please contact technical support.

Read More..

New Scientist 2012 holiday quiz

Continue reading page

|1

|2

THIS was the year we held our breath in almost unbearable anticipation while we waited to see whether physicists at the Large Hadron Collider would finally get a clear view of the Higgs boson, so tantalisingly hinted at last December. Going a bit blue, we held on through March when one of the LHC's detectors seemed to lose sight of the thing, before exhaling in a puff of almost-resolution in July, when researchers announced that the data added up to a fairly confident pretty-much-actual-discovery of the particle.

Early indications were that it might be a weird and wonderful variety of the Higgs, prompting a collective gasp of excitement. That was followed by a synchronised sigh of mild disappointment when later data implied that it was probably the most boring possible version after all, and not a strange entity pointing the way to new dimensions and the true nature of dark matter. Prepare yourself for another puff or two as the big story moves on next year.

This respirational rollercoaster might be running a bit too slowly to supply enough oxygen to the brain of a New Scientist reader, so we have taken care to provide more frequent oohs and aahs using less momentous revelations. See how many of the following unfundamental discoveries you can distinguish from the truth-free mimics that crowd parasitically around them.

1. Which of these anatomical incongruities of the animal kingdom did we describe on 14 July?

• a) A fish, found in a canal in Vietnam, that wears its genitals under its mouth
• b) A frog, found in a puddle in Peru, that has no spleen
• c) A lizard, found in a cave in Indonesia, that has four left feet
• d) A cat, found in a tree in northern England, that has eight extra teeth

2. "A sprout by any other name would taste as foul." So wrote William Shakespeare in his diary on 25 December 1598, setting off the centuries of slightly unjust ridicule experienced by this routinely over-cooked vegetable. But which forbiddingly named veg did we report on 7 July as having more health-giving power than the sprout, its active ingredient being trialled as a treatment for prostate cancer?

• a) Poison celery
• b) Murder beans
• c) Inconvenience potatoes
• d) Death carrots

3. Scientists often like to say they are opening a new window on things. Usually that is a metaphor, but on 10 November we reported on a more literal innovation in the fenestral realm. It was:

• a) A perspex peephole set in the nest of the fearsome Japanese giant hornet, to reveal its domestic habits
• b) A glass porthole implanted in the abdomen of a mouse, to reveal the process of tumour metastasis
• c) A crystal portal in the inner vessel of an experimental thorium reactor, to reveal its nuclear fires to the naked eye
• d) A small window high on the wall of a basement office in the Princeton physics department, to reveal a small patch of sky to postgraduate students who have not been outside for seven years

4. On 10 March we described a new material for violin strings, said to produce a brilliant and complex sound richer than that of catgut. What makes up these super strings?

• a) Mousegut
• b) Spider silk
• c) Braided carbon nanotubes
• d) An alloy of yttrium and ytterbium

5. While the peril of climate change looms inexorably larger, in this festive-for-some season we might take a minute to look on the bright side. On 17 March we reported on one benefit of global warming, which might make life better for some people for a while. It was:

• a) Receding Arctic sea ice will make it easier to lay undersea cables to boost internet speeds
• b) Increasing temperatures mean that Greenlanders can soon start making their own wine
• c) Rising sea levels could allow a string of new beach resorts to open in the impoverished country of Chad
• d) More acidic seawater will add a pleasant tang to the salt water taffy sweets made in Atlantic City

6. In Alaska's Glacier Bay national park, the brown bear in the photo (above, right) is doing something never before witnessed among bearkind, as we revealed on 10 March. Is it:

• a) Making a phonecall?
• b) Gnawing at a piece of whalebone to dislodge a rotten tooth?
• c) Scratching itself with a barnacle-covered stone tool?
• d) Cracking oysters on its jaw?

7. Men have much in common with fruit flies, as we revealed on 24 March. When the sexual advances of a male fruit fly are rejected, he may respond by:

• a) Whining
• b) Hitting the booze
• c) Jumping off a tall building
• d) Hovering around the choosy female long after all hope is lost

8. While great Higgsian things were happening at the LHC, scientists puzzled over a newly urgent question: what should we call the boson? Peter Higgs wasn't the only physicist to predict its existence, and some have suggested that the particle's name should also include those other theorists or perhaps reflect some other aspect of the particle. Which of the following is a real suggestion that we reported on 24 March?

Continue reading page

|1

|2

If you would like to reuse any content from New Scientist, either in print or online, please contact the syndication department first for permission. New Scientist does not own rights to photos, but there are a variety of licensing options available for use of articles and graphics we own the copyright to.

All comments should respect the New Scientist House Rules. If you think a particular comment breaks these rules then please use the "Report" link in that comment to report it to us.

If you are having a technical problem posting a comment, please contact technical support.

Read More..

Today on New Scientist: 21 December 2012

Cadaver stem cells offer new hope of life after death

Stem cells can be extracted from bone marrow five days after death to be used in life-saving treatments

Apple's patents under fire at US patent office

The tech firm is skating on thin ice with some of the patents that won it a $1 billion settlement against Samsung

Himalayan dam-building threatens endemic species

The world's highest mountains look set to become home to a huge number of dams - good news for clean energy but bad news for biodiversity

Astrophile: Black hole exposed as a dwarf in disguise

A white dwarf star caught mimicking a black hole's X-ray flashes may be the first in a new class of binary star systems

Blind juggling robot keeps a ball in the air for hours

The robot, which has no visual sensors, can juggle a ball flawlessly by analysing its trajectory

Studio sessions show how Bengalese finch stays in tune

This songbird doesn't need technological aids to stay in tune - and it's smart enough to not worry when it hears notes that are too far off to be true

Giant tooth hints at truly monumental dinosaur

A lone tooth found in Argentina may have belonged to a dinosaur even larger than those we know of, but what to call it?

Avian flu virus learns to fly without wings

A strain of bird flu that hit the Netherlands in 2003 travelled by air, a hitherto suspected by unproven route of transmission

Feedback: Are wind turbines really fans?

A tale of "disease-spreading" wind farms, the trouble with quantifying "don't know", the death of parody in the UK, and more

The link between devaluing animals and discrimination

Our feelings about other animals have important consequences for how we treat humans, say prejudice researchers Gordon Hodson and Kimberly Costello

Best videos of 2012: First motion MRI of unborn twins

Watch twins fight for space in the womb, as we reach number 6 in our countdown of the top videos of the year

2012 Flash Fiction winner: Sleep by Richard Clarke

Congratulations to Richard Clarke, who won the 2012 New Scientist Flash Fiction competition with a clever work of satire

Urban Byzantine monks gave in to temptation

They were supposed to live on an ascetic diet of mainly bread and water, but the monks in 6th-century Jerusalem were tucking into animal products

The pregnant promise of fetal medicine

As prenatal diagnosis and treatment advance, we are entering difficult ethical territory

2013 Smart Guide: Searching for human origins in Asia

Africa is where humanity began, where we took our first steps, but those interested in the latest cool stuff on our origins should now look to Asia instead

The end of the world is an opportunity, not a threat

Don't waste time bemoaning the demise of the old order; get on with building the new one

Victorian counting device gets speedy quantum makeover

A photon-based version of a 19th-century mechanical device could bring quantum computers a step closer

Did learning to fly give bats super-immunity?

When bats first took to the air, something changed in their DNA which may have triggered their incredible immunity to viruses

Van-sized space rock is a cosmic oddball

Fragments from a meteor that exploded over California in April are unusually low in amino acids, putting a twist on one theory of how life on Earth began

Read More..

Today on New Scientist: 21 December 2012

Cadaver stem cells offer new hope of life after death

Stem cells can be extracted from bone marrow five days after death to be used in life-saving treatments

Apple's patents under fire at US patent office

The tech firm is skating on thin ice with some of the patents that won it a $1 billion settlement against Samsung

Himalayan dam-building threatens endemic species

The world's highest mountains look set to become home to a huge number of dams - good news for clean energy but bad news for biodiversity

Astrophile: Black hole exposed as a dwarf in disguise

A white dwarf star caught mimicking a black hole's X-ray flashes may be the first in a new class of binary star systems

Blind juggling robot keeps a ball in the air for hours

The robot, which has no visual sensors, can juggle a ball flawlessly by analysing its trajectory

Studio sessions show how Bengalese finch stays in tune

This songbird doesn't need technological aids to stay in tune - and it's smart enough to not worry when it hears notes that are too far off to be true

Giant tooth hints at truly monumental dinosaur

A lone tooth found in Argentina may have belonged to a dinosaur even larger than those we know of, but what to call it?

Avian flu virus learns to fly without wings

A strain of bird flu that hit the Netherlands in 2003 travelled by air, a hitherto suspected by unproven route of transmission

Feedback: Are wind turbines really fans?

A tale of "disease-spreading" wind farms, the trouble with quantifying "don't know", the death of parody in the UK, and more

The link between devaluing animals and discrimination

Our feelings about other animals have important consequences for how we treat humans, say prejudice researchers Gordon Hodson and Kimberly Costello

Best videos of 2012: First motion MRI of unborn twins

Watch twins fight for space in the womb, as we reach number 6 in our countdown of the top videos of the year

2012 Flash Fiction winner: Sleep by Richard Clarke

Congratulations to Richard Clarke, who won the 2012 New Scientist Flash Fiction competition with a clever work of satire

Urban Byzantine monks gave in to temptation

They were supposed to live on an ascetic diet of mainly bread and water, but the monks in 6th-century Jerusalem were tucking into animal products

The pregnant promise of fetal medicine

As prenatal diagnosis and treatment advance, we are entering difficult ethical territory

2013 Smart Guide: Searching for human origins in Asia

Africa is where humanity began, where we took our first steps, but those interested in the latest cool stuff on our origins should now look to Asia instead

The end of the world is an opportunity, not a threat

Don't waste time bemoaning the demise of the old order; get on with building the new one

Victorian counting device gets speedy quantum makeover

A photon-based version of a 19th-century mechanical device could bring quantum computers a step closer

Did learning to fly give bats super-immunity?

When bats first took to the air, something changed in their DNA which may have triggered their incredible immunity to viruses

Van-sized space rock is a cosmic oddball

Fragments from a meteor that exploded over California in April are unusually low in amino acids, putting a twist on one theory of how life on Earth began

Read More..

Van-sized space rock is a cosmic oddball

The shattered remains of a high-profile space rock are oddly low in organic materials, the raw ingredients for life. The discovery adds a slight wrinkle to the theory that early Earth was seeded with organics by meteorite impacts.

In April a van-sized meteor was seen streaking over northern California and Nevada in broad daylight. The fireball exploded with a sonic boom and sprayed the region with fragments. Videos, photographs and weather radar data allowed the meteor's trajectory to be reconstructed, and teams quickly mobilised to search for pieces in the foothills of the Sierra Nevada in northern California.

Researchers readily identified the meteorites as rare CM chondrites, thought to be one of the oldest types of rock in the universe. "Because the meteorites were discovered so freshly, for the first time we had a chance to study this type of meteorite in a pristine form," says Peter Jenniskens of the SETI Institute in Mountain View, California, who led the search effort and the subsequent study of the space rocks.

Jenniskens personally found a fragment in a parking lot, where it remained relatively free of soil contaminants. "That's the best you could hope for, other than landing in a freezer," says Daniel Glavin of NASA's Goddard Space Flight Center in Greenbelt, Maryland.

Battered past

CM chondrites make up only about 1 per cent of known meteorites. Most of them contain plenty of organic materials, including amino acids, the building blocks of life on Earth.

Jenniskens and colleagues found that the California fragments also have amino acids, including some not found naturally on Earth. But in three rocks collected before a heavy rainstorm, which bathed the other pieces in earthly contaminants, organics are less abundant by a factor of 1000 than in previously studied CM chondrites.

These three rocks could not have lost organics due to space "weathering": analysis of the meteorites' exposure to cosmic rays suggests the original meteor was flying through space for only about 50,000 years before hitting Earth.

Based on its trajectory and its relatively short flight time, Jenniskens thinks the meteor can be traced back to a family of asteroids dominated by 495 Eulalia, a group known as a possible source of CM chondrites. It is probably a piece that broke off during an impact, revealing the relatively pristine material inside.

So what happened to its organics? Jenniskens' team found that the meteorites are breccia – smaller rocks cemented together – which suggests that the asteroid from which they came took a series of beatings. Those impacts, or possibly other processes inside the asteroid, could have heated it enough to destroy most organic material.

Limited delivery

The result might have implications for the organics delivery theory, says Bill Bottke of the Southwest Research Institute in Boulder, Colorado.

"It shows that not all asteroids can deliver sufficient quantities. One of the disappointments is that, from a prebiotic organic chemistry perspective, it was very limited," says Bottke. "But this is an unusual case. Most [CM chondrites] are loaded with organic compounds."

Still, studying the space rocks will help us prepare future missions to asteroids such as OSIRIS-Rex, scheduled to take off for asteroid 1999 RQ36 in 2016 and bring a sample back in 2023.

"In some ways, we've had a sample, a very fresh one, come to us," says Bottke. "This is a test bed for the techniques we'll use in that mission."

Journal reference: Science, DOI: 10.1126/science.1227163

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Human hands evolved so we could punch each other

Forget toolmaking, think fisticuffs. Did evolution shape our hands not for dexterity but to form fists so we could punch other people? That idea emerges from a new study, although it runs counter to conventional wisdom.

About the same time as we stopped hanging from trees and started walking upright, our hands become short and square, with opposable thumbs. These anatomical changes are thought to have evolved for tool manipulation, but David Carrier at the University of Utah in Salt Lake City has an alternative explanation.

He says there are several possible hand shapes that would have allowed greater dexterity, making it less clear why we ended up with the hands we have. But only one hand shape lets us make a fist with a thumb as buttress.

Among primates' hands, ours is unique for its ability to form a fist with the thumb outside the fingers. The fingers of other primates' hands are too long to curl into their palms, and their thumbs are too short to reach across the fingers. So when apes fight, they are far more likely to wrestle or hold their opponent down while others stomp on him, says Carrier.

To test the importance of fists, Carrier and his colleagues recruited 10 athletes and measured how hard they could hit a punching bag using a normal fist, a fist with the thumb stuck out, and with an open palm.

The athletes could generate more than twice the force with a normal fist as with the thumb-stuck-out fist, because of thumb's buttressing role. There was no difference in the force they could generate with a normal fist and with an open palm, but Carrier says it's possible that a fist concentrates the force into a smaller area and so does more damage.

Cause or effect?

Mary Marzke of Arizona State University in Tempe says the study is interesting, but it far from proves that the ability to make a strong fist was the main driver behind the evolution of our hands' shape. It is more likely that it was a useful side effect of a whole suite of modifications.

She points out that apes strike with the heel of their hand when knocking fruit out of trees. Carrier's study didn't assess the force that the heel of the hand generates, but if it turns out to be as good as a fist, it becomes less clear that our hands evolved so as to be perfect for fist-making, Marzke says.

But if the hypothesis is true, Carrier thinks it could explain another mystery. It has long been unclear why high levels of testosterone cause men's ring fingers to be longer than their index fingers. He says the finger-length ratio makes sense if it generates a better fist. This would make dominant males even better fighters.

Journal reference: Journal of Experimental Biology, doi:10.1242/jeb.075713

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Today on New Scientist: 18 December 2012

Violent polar storms help control the world's weather

Without the mini-hurricanes which form over the Arctic, the world could face massive weather disruption

Ancient city of Troy rebranded itself after war

Changing styles of pottery 3200 years ago show the Trojans were quick to align themselves with the region's new political power

Court ruling will clarify end-of-life decisions

Canada's supreme court will soon rule on whether doctors can stop treatment for "unconscious" patients, but determining awareness remains a thorny issue

Colourful claw of tiny ocean predator

See a prizewinning photo of the claw of a Phronima: a tiny marine predator whose size belies its ferocity

Gaming chair mimics a full-motion simulator

If you can't afford a full-motion flight or car simulator, here's a cheap way of creating some of the same effects

How an ancient Egyptian code unmasked a cannibal star

Has a papyrus from the time of the pharaohs exposed the ghoulish habits of the baleful Demon Star? Stephen Battersby investigates

Best videos of 2012: Bonobo genius makes stone tools

Watch a creative bonobo fashion tools to retrieve hidden food, at number 9 in our countdown of the year's best videos

Is the obesity epidemic caused by too much sugar?

In Fat Chance, endocrinologist Robert Lustig argues that insidious changes to our eating habits have caused disruptions to our endocrine systems

'The idea we live in a simulation isn't science fiction'

If the universe is just a Matrix-like simulation, how could we ever know? Physicist Silas Beane thinks he has the answer

Fungal frog killer hops into crayfish

Crayfish are vulnerable to the same chytrid fungus already killing frogs all over the world. The discovery provides a clue to how the disease spreads

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Fungal frog killer hops into crayfish

Crayfish are vulnerable to the same fungus that is killing frogs all over the world. The discovery helps explain how the disease spreads even after all the amphibians in an area have been wiped out. Worryingly, chemicals released by the fungus may alone be enough to kill.

Taegan McMahon of the University of South Florida, Tampa, and colleagues discovered infected crayfish in field surveys in Louisiana and Colorado. They found that up to 29 per cent of the animals carried the chytrid fungus Batrachochytrium dendrobatidis. Lab studies proved that crayfish can become infected and die, the first time this has been shown in non-amphibians.

Infected crayfish can pass the disease to tadpoles, and crayfish exposed to water from which the fungus had been filtered still died. McMahon says the distribution of crayfish around the world may explain why the fungus is so widespread.

She adds that it is "is certainly possible" that other invertebrates might carry the fungus. Her team are currently investigating this and are working on possible ways to stop the spread of the toxin.

"It's very compelling, their evidence for crayfish as a disease vector and for a toxic effect secreted in the water," says Trenton Garner at London's Institute of Zoology.

PNAS, DOI: 10.1073/pnas.1200592110

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Zebrafish made to grow pre-hands instead of fins

PERHAPS the little fish embryo shown here is dancing a jig because it has just discovered that it has legs instead of fins. Fossils show that limbs evolved from fins, but a new study shows how it may have happened, live in the lab.

Fernando Casares of the Spanish National Research Council and his colleagues injected zebrafish with the hoxd13 gene from a mouse. The protein that the gene codes for controls the development of autopods, a precursor to hands, feet and paws.

Zebrafish naturally carry hoxd13 but produce less of the protein than tetrapods - all four-limbed vertebrates and birds - do. Casares and his colleagues hoped that by injecting extra copies of the gene into the zebrafish embryos, some of their cells would make more of the protein.

One full day later, all of those fish whose cells had taken up the gene began to develop autopods instead of fins. They carried on growing for four days but then died (Cell, DOI: 10.1016/j.devcel.2012.10.015).

"Of course, we haven't been able to grow hands," says Casares. He speculates that hundreds of millions of years ago, the ancestors of tetrapods began expressing more hoxd13 for some reason and that this could have allowed them to evolve autopods.

If you would like to reuse any content from New Scientist, either in print or online, please contact the syndication department first for permission. New Scientist does not own rights to photos, but there are a variety of licensing options available for use of articles and graphics we own the copyright to.

All comments should respect the New Scientist House Rules. If you think a particular comment breaks these rules then please use the "Report" link in that comment to report it to us.

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Read More..

Zebrafish made to grow pre-hands instead of fins

PERHAPS the little fish embryo shown here is dancing a jig because it has just discovered that it has legs instead of fins. Fossils show that limbs evolved from fins, but a new study shows how it may have happened, live in the lab.

Fernando Casares of the Spanish National Research Council and his colleagues injected zebrafish with the hoxd13 gene from a mouse. The protein that the gene codes for controls the development of autopods, a precursor to hands, feet and paws.

Zebrafish naturally carry hoxd13 but produce less of the protein than tetrapods - all four-limbed vertebrates and birds - do. Casares and his colleagues hoped that by injecting extra copies of the gene into the zebrafish embryos, some of their cells would make more of the protein.

One full day later, all of those fish whose cells had taken up the gene began to develop autopods instead of fins. They carried on growing for four days but then died (Cell, DOI: 10.1016/j.devcel.2012.10.015).

"Of course, we haven't been able to grow hands," says Casares. He speculates that hundreds of millions of years ago, the ancestors of tetrapods began expressing more hoxd13 for some reason and that this could have allowed them to evolve autopods.

If you would like to reuse any content from New Scientist, either in print or online, please contact the syndication department first for permission. New Scientist does not own rights to photos, but there are a variety of licensing options available for use of articles and graphics we own the copyright to.

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CERN becomes first pure physics voice in UN chorus

Lisa Grossman, physical sciences reporter

(Image: UN Photo/Paulo Filgueiras)

If CERN observes the proceedings of the United Nations, will it change the outcome?

The international particle physics laboratory, based near Geneva, Switzerland, has been granted observer status in the General Assembly of the United Nations, CERN officials announced today. 

The lab joins environmental groups and public health agencies as the first physical sciences research organization in the ranks of UN observers. Observer status grants the right to speak at meetings, participate in procedural votes, and sign and sponsor resolutions, but not to vote on resolutions.

In some ways, CERN's addition seems a natural move - and a long time coming.

The facility was founded in 1954 under the auspices of the United Nations Educational, Scientific and Cultural Organisation (UNESCO). Its initial mission was to provide collaborative projects for researchers from Allied countries and former Axis countries after the second World War.

Arguably the lab's most high-profile project, the Large Hadron Collider, made headlines worldwide this year when it revealed detection of a new particle that appears to be the elusive Higgs boson.

"Through its projects, which bring together scientists from all over the world, CERN also promotes dialogue between nations and has become a model for international cooperation," CERN states in a press release. The lab says it may use its new status with the UN to help shore up scientific education and technological capabilities in developing countries, particularly in Africa.

But just as observing a quantum particle can change its state, can CERN's involvement truly collapse the UN's wavefunction and trigger better global science and technology policies? Only time will tell.

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Today on New Scientist: 13 December 2012

Violent beauty at the end of an Alaskan glacier

You can almost hear the crash of ice on water in this stunning image of an ice sheet calving off the Chenega glacier in Alaska

Overeating now bigger global problem than lack of food

The most comprehensive disease report ever produced confirms that, for the first time, there is a larger health problem from people eating too much than too little

In search of the world's oldest cave etching

Strange markings on the walls of a cave in Australia's vast Nullarbor Plain could have been a tactile code for ancient Aboriginal flint miners

Higgs boson having an identity crisis

Six months on from its announcement, the mass and decay rates of the particle thought to be the Higgs boson are proving hard to pin down

Go forth and print: 3D objects you can print yourself

We pick our favourite objects to 3D-print, including a mathematical cookie cutter, a wormhole and a New Scientist holiday tree ornament inspired by fractals

Laser drills could relight geothermal energy dreams

High-powered lasers that can drill through igneous rocks may make reaching oil and geothermal sources much easier

Robots should be cleaning your home

Tech investor Dmitri Grishin explains why the time is right for sleek, versatile robots that will be our everyday helpers rather than factory equipment

Welcome to the personal drone revolution

Sophisticated, affordable drones could soon be so commonplace that they will become our personal servants, says Michael Brooks

Finding dangerous asteroids, before they find us

Near-Earth Objects: Finding them before they find us by Donald Yeomans is a fascinating tour guide of the asteroids we should worry about

World's loneliest bug turns up in Death Valley

A microbe that survives deep below Earth's surface without the sun's energy has reappeared, in California

Search for aliens poses game theory dilemma

The complex question of whether to risk contact with ET may be navigable with a new spin on the "prisoner's dilemma"

'Robot ecosystem' in sight as apps get a cash boost

The first company dedicated to investing in consumer robotics stakes $250,000 on robot apps

First results from James Cameron's trip to the abyss

It's not Pandora, but the Mariana trench holds life just as strange as that in James Cameron's film Avatar

UK government urged to consider relaxing drug rules

A parliamentary report calls for a fresh programme of research to monitor the effects of European drug legalisation

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UK government urged to consider relaxing drug rules

JUST say yes to considering relaxed drug controls, urged a panel of UK parliamentarians this week - but Prime Minister David Cameron has rejected the calls.

Many countries have loosened their penalties for drug use, including the Czech Republic and Portugal, which introduced a "de-penalisation" strategy in 2000. Citizens caught in possession avoid criminal records but must attend drug advice sessions. Last month, the US states of Colorado and Washington voted to legalise the recreational use of cannabis.

The UK report calls for the effects of these legal moves to be monitored. "Drugs policy ought to be evidence-based as much as possible," it concludes. "We recommend that the government fund a detailed research project to monitor the effects of each legalisation system."

The report notes that 21 countries have now introduced some form of decriminalisation. But the government's response has been lukewarm. "I don't support decriminalisation," said Cameron. "We have a policy which actually is working in Britain. Drugs use is coming down."

If you would like to reuse any content from New Scientist, either in print or online, please contact the syndication department first for permission. New Scientist does not own rights to photos, but there are a variety of licensing options available for use of articles and graphics we own the copyright to.

All comments should respect the New Scientist House Rules. If you think a particular comment breaks these rules then please use the "Report" link in that comment to report it to us.

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