Earth
Ancient microbes caused Earth鈥檚 first ever global warming
Over 3 billion years ago, the sun was faint so our planet should have been a snowball. But it wasn鈥檛 鈥� and microorganisms may have been what kept it warm
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Earth
Cold climate may have driven ancient humans鈥� move out of Africa
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Earth
Gel-like ice is the lightest form of water ever discovered
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Environment
We may finally understand why tropical plants have huge leaves
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Earth
Uninhabitable Earth? In fact, it鈥檚 really hard to fry the planet
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Earth
Living with climate change: What’s the worst that can happen?
Features
Space
The hottest planet yet is twice Jupiter鈥檚 size and hot as a star
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Physics
Three-atom molecule cooled to near absolute zero for first time
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Earth
Big cities warm up during the week as commuters flock in
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Physics
Squeezed light cools tiny drum to coldest temperature ever
A special trick with lasers helped lower聽a nano-sized membrane to below the "quantum limit" 鈥� colder than was thought possible
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Earth
Future air conditioning could work by beaming heat into space
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Physics
Space is all the same temperature. Coincidence?
Features
Life
6000 people cram into one pool in China to beat the heat
Regulars
Earth
Scorchio! Earth’s surface is the hottest it has been in history
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