A US judge rules that negligence by army engineers led to massive flooding in part of New Orleans as Hurricane Katrina struck in 2005.

Helena Christensen documents climate change

Energy-efficient light bulbs lose on average more than a fifth of their brightness over their lifetime, a study finds.

Amazing footage of a baby ibex's perilous escape from a fox is captured on film by a BBC natural history cameraman.

Amazing footage of a baby ibex's perilous escape from a fox is captured on film by a BBC natural history cameraman.

Scientists show off an effect not unlike that of "phasers" in Star Trek - but it only works on tiny worms called nematodes.

Drinking alcohol every day cuts the risk of coronary heart disease in men sharply, a study suggests, but experts remain critical.

Darwinian natural selection could help halt human "mad cow disease", experts say after finding a tribe impervious to a related fatal brain disorder.

Darwinian natural selection could help halt human CJD, experts say after finding a tribe impervious to a related fatal brain disorder.

A species of skate could become the first marine fish driven to extinction by commercial fishing, say scientists.

A common skate could become the first fish species to be driven to extinction by commercial fishing, say scientists.

Space shuttle Atlantis has successfully docked with the International Space Station, Nasa officials say.

Science delegations to the European Space Agency approve a much more expensive mission to the planet Mercury.

A simple and cheap approach to diagnosing a wide array of medical conditions has been demonstrated by researchers.

Countdown to maiden flight of Falcon 9 rocket

Stargazers who stayed up all night to witness what an intense meteor shower are left disappointed

Stargazers who stayed up all night to witness what an intense meteor shower are left disappointed

The science of milk carton design and other objects

The science of milk carton design and other objects

Women in developing countries will be the most vulnerable to climate change, a report from the UN Population Fund warns.