Life
Dead exoplanets can have oxygen-rich atmospheres too
If Earth's ostensible twin is out there, it might be a lifeless rock 鈥� dead worlds can build up oxygen in their atmospheres as well as living ones
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Even lifeless exoplanets can have oxygen-rich air
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Life
First animals may have lived with almost no oxygen
News
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Oxygen drop makes people with spine injury more mobile
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Life
Drop air pressure to give chickens a stress-free death
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Earth
The oceans are heating, acidifying and choking
News
Life
Primordial broth of life was a dry Martian cup-a-soup
News
Space
Biosphere 2: Saving the world within a world
Features
Earth
Everest’s final frontier: Life without oxygen
Features
Life
Dawn of the water eaters: How Earth got its oxygen
In Earth's youth, photosynthetic life forms thrived for a billion years without producing so much as a whiff of oxygen. So why did some start pumping it out?
Features
Technology
The top new tech that took Hillary’s team up Everest
Regulars
Life
Deep life: Strange creatures living far below our feet
Features
Earth
Ozone kills by hampering gas exchange in lungs
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Life
Rusty rocks reveal ancient origin of photosynthesis
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