Earth
The evolutionary burst that made Earth oxygen-rich
Gene families involved in respiration and photosynthesis arose in a short evolutionary burst which began around 3.3 billion years ago
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Life
Divers could breathe deep with liquid-filled lungs
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Earth
Green machine: Perfecting the plant way to power
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Technology
Lung-style fuel cell needs less bling for more oomph
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Earth
Super goby helps salvage ocean dead zone
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Humans
Tibetans adapted to high life at record-breaking rate
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Technology
Cheap camera used to measure oxygen levels
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Earth
Green machine: Cars could run on sunlight and CO2
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Health
Arizona man is first to take artificial heart home
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Health
Maxed out: How high can you go?
How long could you stay at the top of Everest without extra oxygen?
Features
Environment
Zoologger: The mud creature that lives without oxygen
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Health
The brain scanner that feels your pain
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Health
Adding oxygen to booze speeds sobriety
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Environment
Alligators’ bird breath may explain dinosaurs’ triumph
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