Chemistry
The mystery of highly reactive oxygen has finally been solved
Singlet oxygen can be damaging in both cells and batteries but it has taken almost 60 years to work out exactly when it shows up in chemical reactions within both
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Space
How excited should we be by signs of life spotted on alien worlds?
Features
Health
Pigs can breathe oxygen via their rectum, so humans probably can too
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Hypoxia
Environment
Why is Earth so rich in oxygen? The answer is simpler than we thought
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Earth
Oxygen may have helped complex life arise a billion years early
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Earth
What we’re doing now will make the ocean completely unliveable
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Space
Spiralling galaxy arms spread oxygen around for future planets
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Life
Resurrected gene allows time travel to an Earth before oxygen
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Environment
The incredible naked mole rat can survive with hardly any oxygen
These animal superheroes get on fine in conditions that would kill us and can go into a kind of suspended animation if oxygen levels drop too low
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Life
Breath of life: Did animals evolve without oxygen?
Features
Earth
Complex life may have had a false start 2.3 billion years ago
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Earth
Without oxygen from ancient moss you wouldn’t be alive today
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Earth
Shooting stars show Earth had oxygen eons before we thought
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