Environment
Cleaning up China's dirty air would give solar energy a huge boost
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solar system
Space
How Mercury and Venus can guide our hunt for alien life on exoplanets
Features
Space
Europa’s salty surface may indicate an ocean that’s good for life
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Space
The planets might control the sun's activity - and it's not astrology
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Health
Gut microbes may determine whether infants develop food allergies
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Space
By Jupiter! How the solar system’s giant made Earth ripe for life
Features
Space
The young sun spun slowly, which could explain why we are here
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