Balloons fit for globetrotting: Three balloonists are planning to circle the Earth at an altitude of 10 000 metres in one of the most bizarre aircraft ever designedFeatures
Escape from Biosphere 2: On Sunday the four men and four women who volunteered to spend two years in a sealed bubble will come out to resume life in the real world. But does their experience bring us any closer to living on Mars?Features
Danger! Scientists at work - Dodging molten lava, sharks or gun-toting landowners - it's all in a day's work for some scientistsNews