Four-stranded DNA points to cancer cure

Cambridge University researchers say they've proved that four-stranded ‘quadruple helix’ DNA structures exist within the human genome.

Why dogs are tameable and wolves aren't

It's long puzzled biologists why dogs have become man's best friend while wolves remain fiercely wild, when genetically the two are so similar.

'Anonymous' genetic data can identify individuals

Supposedly anonymous people taking part in genomic studies can be identified using publicly accessible online resources, a team of Whitehead Institute researchers has shown.

Crabs and lobsters feel pain, say researchers

Boiling lobsters alive for food must stop, say scientists, who say their experiments show that, along with other crustaceans such as crabs and prawns they do feel pain.

Robotic fish glides almost indefinitely

Michigan State University scientists say their latest robot fish can glide almost forever, using little to no energy, while gathering data on water quality.

Indians migrated to Australia 4,000 years ago

Native Australians weren't, as thought, isolated from the rest of the world for 40,000 years: they absorbed a wave of migration from India just 4,000 years ago, a genetic study shows.

Chimpanzees have sense of fair play

Chimps have the same sense of fairness as human beings, say researchers who played the Ultimatum game with them - the first time the trait's been observed in a non-human species.

DNA technique reveals ancient hair and eye color

Researchers have discovered that a new method of establishing hair and eye color from modern forensic samples can also do the same for ancient human remains.

X-rays reveal how earliest animals moved

The first four-legged animals dragged themselves across the ground like seals, a reconstruction of their backbones has shown.

Clock is based on a single atom

It may not be as accurate as today's atomic clocks, but it's an awful lot simpler in concept: a new way of measuring time based on the mass of an atom.

Sharks play dead before they're even born

Embryonic sharks, still within the egg, can sense danger and freeze toavoid being detected by predators, say marine scientists at the University of Western Australia.

San Andreas fault could pose wider risk than thought

The 'stable' zones thought to inhibit nearby earthquakes may actually make them worse, a new study shows, implying that California's San Andreas fault may be much more dangerous than believed.

Physicist wants to put Einstein's equation to the test

Does E always equal mc²? University of Arizona physicist Andrei Lebed suspects not - and plans to try and check.

Stampeding dinos were crossing river

The world's only recorded dinosaur stampede shows the tracks of swimming rather than running animals, say University of Queensland researchers, representing clawmarks on a riverbed.

Why the kilogram is overweight

Just like the rest of us, the kilogram has put on a bit of weight - and a little dose of sunshine may be the way to get it back down to size.

Freezing antimatter could pin it down for study

Antimatter's not the easiest stuff to work with - the minute it encounters ordinary matter it self-destructs. Now, though, scientists believe they've found a way to keep it in one place for long enough to study, by cooling it right down.

The early bird catches... the crab

A new fossil discovery has shown that some early birds evolved teeth adapted for specialized diets.

Double-star systems pose big risk for planets

Planets with binary stars - such as Star Wars' Tatooine - may be dangerous places to live, even risking the chance of being ejected into interstellar space.

Brainy guppies show evolutionary tradeoff

It's long been suspected that having a big brain isn't necessarily an evolutionary advantage. Now, scientists have come up with experimental evidence for this view, by breeding a strain of big-brained guppies.

Long-beaked echidna may still survive in Australia

The western long-beaked echidna, believed to have become extinct in Australia thousands of years ago, may still be alive and kicking in parts of the country today.