Cannibal insect sex caught on video

Joanna Carver, reporter

It may be considered poor form in the human dating game, but cannibalistic sex is common practice among hump-winged grigs. This video shows a female insect feasting on her partner's hind wings then drinking the blood from his wound, apparently with little interest in procreation. The male isn't completely passive though: he uses a hook on his abdomen to catch the female, linking their genitals together.

The wing material doesn't grow back, so each time a male mates, his hind wings get shorter. Females prefer males with undamaged wings, which makes wingless male grigs less desirable. But according to Kevin Judge, an insect expert from George MacEwan University in Edmonton, Alberta, Canada, females will sometimes move onto other body parts when there isn't much wing to tuck into. "I've seen males with missing hind legs that have apparently been chewed off by females," says Judge.

When hungry, however, female grigs are less picky about their choice of mate. In a recent study, Judge and his colleagues found that when starved, they would breed with males of other grig species. This behaviour is more likely to occur at the end of the breeding season. "All their own males are tapped out and they just go with what's available," says Judge.

Interspecies romance isn't unique to grigs: many animals also branch out from their own type. To find out more about these risky sexual practices, check out our feature, "Dangerous liaisons: Fatal animal attractions".

If you enjoyed this post, watch a video reveal details of nematode mating or see how water striders pin down females for sex.

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Stone-age cinema: Cave art conceals first animations

Sandrine Ceurstemont, editor, New Scientist TV

Think the first movies were screened in a cinema? According to an analysis of cave art, our prehistoric ancestors may have invented the concept while drawing on their walls.

In this video, researcher and film-maker Marc Azema from the University of Toulouse Le Mirail in France reveals how several frames of an animation are superimposed in many animal sketches. A horse painting from the Lascaux caves in France, for example, is made up of many versions of the animal representing different positions of movement. In this video, Azema extracts the individual images and displays them in succession, demonstrating how they play back like a cartoon.

In other examples, motion is represented by juxtaposing drawings of a body in motion. Azema creates another sequence by picking out motion frames to produce an animation of a running animal.

Apart from layered paintings, ancient humans may have used light tricks to evoke motion on cave walls. Engraved discs of bone have also been found which produce galloping animations when spun on a string, reminiscent of flipbooks. For more on prehistoric cinema, read our feature article, "Prehistoric cinema: A silver screen on the cave wall".

If you enjoyed this post, watch the first science films or the animal stars of the first colour movies.

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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 the physical sciences

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

You may have thought that 2011 was the year of amazing physics, but 2012 soundly beats it. Whereas last year threw up intriguing questions, 2012 was a year of answers, some enabled by marvels of engineering. A boson resembling the Higgs popped up at the largest particle accelerator ever built, confirming hints first glimpsed at the end of 2011. Statistics were crucial to that discovery and proved vital even in the US presidential elections. But 2012 brought lessons as well as triumphs: what looked in 2011 like neutrinos breaking the cosmic speed limit was revealed to be an engineering flaw. Now, relive the roller coaster.

Beyond Higgs: Deviant decays hint at exotic physics
The world's most wanted particle has shown up at last, and surprises in its behaviour could help transcend the limits of the standard model of particle physics

Neutrino speed errors dash exotic physics dreams
Extra dimensions, time travel and tachyons all seemed a little more likely in the wake of claims that subatomic particles called neutrinos had moved faster than light – but the universe just returned to its slightly more mundane self

If you want to be president, hire geeks not pundits
As the US re-elected President Barack Obama, mathematics fans crowned their own king: statistician Nate Silver. Elections of the future could be won by the party with the best stats

Why physicists can't avoid a creation event
The big bang may not have been the beginning of everything – but new calculations suggest we still need a cosmic starter gun

Fiendish 'ABC proof' heralds new mathematical universe
Solving this 25-year-old puzzle meant tearing up and rebuilding the basic elements of number theory – and the result could prise open other enigmas

Death-defying time crystal could outlast the universe
Don't take the heat death of the universe lying down – a time crystal, symmetrical in time rather than space, would have the power to survive even the end of the universe

Truth of the matter: The Majorana particle mystery
Can a single entity be matter and antimatter at the same time? The idea was first aired 80 years ago, but now matter-antimatter hybrids seem to have been sighted trapped in the innards of a solid superconductor

Quantum measurements leave Schrödinger's cat alive
Physicists have probed a delicate quantum state without destroying it – the equivalent of taking a peek at the metaphorical cat without killing it

US judge rules that you can't copyright pi
The mathematical constant pi continues to infinity, but an extraordinary lawsuit that centred on this most beloved string of digits has come to an end – on Pi Day

Move over graphene, silicene is the new star material
After only a few years basking in the limelight, wonder material graphene now has a silicon-based competitor that could be more compatible with electronic devices

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..

Approval for gene-modified salmon spawns controversy

Fast-growing salmon have cleared another hurdle in an upstream battle to be the first genetically modified animal approved for human consumption. After a long and possibly politically motivated delay, federal regulators have released preliminary documents declaring the fish safe to eat and environmentally harmless.

Since 1995, a company called AquaBounty, based in Maynard, Massachusetts, has been seeking approval from the US government to sell its AquAdvantage fish. These Pacific salmon have been modified with a growth hormone gene from Chinook salmon, which causes them to grow twice as fast as normal fish.

Rather than releasing the fish into the wild, the company plans to engineer its eggs in highly secure tanks in Canada, then ship them to Panama to mature. As a precaution, the fish are all female and contain three copies of each chromosome rather than two, rendering them sterile.

Controversy has engulfed the fish since their creation, but the concern is more about their potential ecological impacts than dangers to human health. Organisations such as the Marine Fish Conservation Network, which promotes sustainable fishing practices, worry that the transgenic salmon could outcompete wild salmon if they escape. "The risk of escapes and damage to wild ocean fisheries is simply too great to be left to chance," director Matt Tinning said in a statement.

The organisation says it has not yet had time to review the newly released assessment, published on 27 December by the US Food and Drug Administration (FDA). In two preliminary documents, it declares that AquaBounty's safety measures are sufficient, that the fish would have no significant environmental impact and that they are safe for human consumption.

Delayed release

The timing of the release has sparked suspicion of political interference, as it came hours after a non-profit organisation called the Genetic Literacy Project published FDA documents showing that the assessment had been complete since April and should have been released immediately. The organisation's investigation suggests that the White House's Office of Science and Technology Policy (OSTP), concerned over the issue's sensitivity, had blocked the documents' release until after the presidential election.

Asked about the allegations, the OSTP referred New Scientist to the FDA, whose spokesperson Shelly Burgess declined to comment. But she says that the agency is being particularly cautious as the salmon are the first transgenic animal to reach this point in the approval process.

Final approval of the salmon could still be some way off, however. The public now has 60 days to comment on the documents before the FDA will review them again. Burgess says it is impossible to predict how long the next review might take.

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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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

MANY of the most fascinating sights in the universe are not evident to the naked eye. Happily, cutting-edge imaging - whether done with a microscope, telescope, MRI scanner or just a camera lens - means these sights are now ours for the seeing.

Can you link up 16 intriguing images with their more commonplace counterparts shown here?

Correctly match all 16 pairs and submit your answers by 4 January 2013 for a chance to win an Olympus E-PL5 digital camera worth £600.

A couple of hints: three of the images you'll be matching are not close-ups, and the links are not necessarily straightforward, so be sure to engage your imagination.

Read the full terms and conditions and submit your answers at newscientist.com/photopuzzle

Follow @CultureLabNS on Twitter

Like us on Facebook

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Feast for the senses: Cook up a master dish

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New Scientist 2012 holiday quiz

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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?

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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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Dangerous liaisons: Fatal animal attractions

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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

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Best videos of 2012: First motion MRI of unborn twins

Joanna Carver, reporter

These twins imaged in the womb are ranked at number 6 in our best videos of 2012 countdown.

If you want to get a sense of what it might be like to share a womb with a sibling, this video may give you a glimpse. For the first time, unborn twins have been captured using cinematic MRI, a technique that images slices of the body several times to create a video with astonishing detail.

According to Marisa Taylor-Clarke of Imperial College London, who recorded the images, this is "raw" footage, unlike typical videos of the womb, which require computer processing afterwards. She uses the technique to study twin-to-twin transfusion syndrome, a potentially fatal condition where one twin's growth is stunted when its sibling receives more of the blood supply.

For more about the video check out the original article, "Unborn twins caught on video MRI for the first time". If you enjoyed this post, see the first video of a couple having sex in an MRI scanner.

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Best videos of 2012: Experience a trip into a wormhole

Joanna Carver, reporter

This wild wormhole ride comes in at number 7 in our best videos of 2012 countdown.

Pondering what the trip of a lifetime would be? This animation by Andrew Hamilton from the University of Colorado at Boulder shows what the eye-boggling journey through a wormhole would look like.

First, you fall into the event horizon of a black hole. Once inside, you'll see the entire history of the universe in a flash of radiation. People would be vaporised by this point, so you'll have to be superhuman to make your way back out. You emerge from the black hole and tumble into a wormhole, where the flow of space around you reverses and you head back the way you came. Finally, you find yourself in a white hole - a time-reversed black hole - and speed forward faster than light.

Another radiation flash shows you the entire future of the universe, then another shows you the entire past of the new universe you're now entering. The animation then lets you turn around and see the universe you've just left.

For more about the visualisation, check out the original post: "What a trip through a wormhole would look like". You may also like to read our related feature, "Intergalactic subway: All aboard the wormhole express" or experience Hamilton's animation of a trip through a black hole.

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'Pinch-and-paste' app boosts your interior design skills

Paul Marks, senior technology correspondent

(Image: Tulcarion/Getty)

Ever idly wondered what your kitten would look like if it had
your hairstyle? Or what your living room would look like
with a tiger-print shag-pile carpet? An augmented reality app will one day let you visualise such things on tablets or phones in an interesting way: you'll simply "pinch" the texture you want from an image on a
touchscreen and paste it onto a photo of the target.

It's the work of Kiyoshi Kiyokawa at Osaka University in Japan and colleagues, who demonstrated their system - called "pinch-n-paste" - at the Virtual Reality Software and Technology (VRST 2012) conference in Toronto, Canada, last week. Their work-in-progress system computes how the 3D texture pixels (or "texels") should wrap around the shape of the target 3D surface and then maps them onto it.

"In the case of interior design, a user could grab a texture from a real
chair in a room and paste it to an image of a sofa to see how the
newly covered sofa suits the room," Kiyokawa says.

Pinch-n-Paste in action (Image: Kiyoshi Kiyokawa, Osaka University)

"We aim to be able to change any real object's appearance by sampling another real or virtual object's colour, texture, shape and so on, and move, delete, duplicate them as if they are virtual," he says. Combined with a head-mounted display - like Google Glasses - it will feel like "your own tailored world is real".

But what about my pasting my bouffant onto my cat? "Technically it's much more challenging, as cats are difficult to track. But it is along our research direction," Kiyoshi says.

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Best videos of 2012: Bonobo genius makes stone tools

Joanna Carver, reporter

A creative bonobo caught making tools slides in at number 9 in our best videos of 2012 countdown.

Kanzi just wanted a snack. Eviatar Nevo of the University of Haifa in Israel and colleagues locked some food inside a log - not to mess with the 30-year-old bonobo, but to see what he would come up with to retrieve it.

His solution? Making flints from stones then using them to drill into the log, a tactic that allowed him to successfully break into 24 different pieces of wood. Not all bonobos, however, seem to have the same knack for tool-making: Kanzi's companion got at the food twice but only by smashing the log on the ground.

Apart from crafting tools, Kanzi also paints, uses sign language and has even been seen making up words.

For more on bonobo technology, read the original article: "Bonobo genius makes stone tools like early humans did".

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Best videos of 2012: Gravity-defying roof illusion

Joanna Carver, reporter

A head-scratching illusion comes in at number 10 in our best videos of 2012 countdown.

Try to wrap your head around this illusion featuring a roof that appears to defy gravity by attracting balls to its peak. Once the house is rotated to uncover the secret, you'll be surprised to see how dramatically your brain was tricked.

According to Kokichi Sugihara from Meiji University in Kawasaki, Japan, who created the mind-bending house, the illusion is interesting because our brain is fooled even after we've seen the reveal. When trying to make sense of a figure, we're primed to perceive rectangular configurations time and time again.

To find out more, read our original article: "Friday Illusion: Impossible roof defies gravity". For more mind-boggling videos, check out an impossible wedding car or watch a 3D shape that conceals six different tricks.

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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.

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

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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.

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

Read More..