Avatar director to tackle Challenger Deep
James Cameron is planning a voyage to the bottom of the world's deepest ocean. Is human exploration more valuable than robotic research?
Scotland Yard and the spy who ‘went native’
Environmental protestors have escaped prosecution, after a police mole who spied on them sensationally changed sides. Everyone’s angry – but who’s in the right?
Miracle and disaster as China grows rich
Boomtime for industry in China has brought health risks for the population, with frequent poisonings and accidents. But there are benefits as well.
Scientists attack killer junk food in our shops
We could save over 3000 deaths a month by passing a law to make everyday foods healthier, say scientists. But the government says what we eat should be a free choice.
Spare liver, anyone? No longer an absurd question
The developing ability of scientists to grow human organs in the lab is leading many experts to predict a new age of unlimited replacement items for the human body.
Oil pollution: best when out of sight and out of mind
The BP oil leak off the coast of America has led Barack Obama to crack down on offshore drilling. But does this mean even worse pollution in other parts of the world?