Life
A radical new theory rewrites the story of how life on Earth began
Features
sea life
Life
Marine kaleidoscope shows the beauty of coral reefs
Regulars
Environment
Climate change may kill off nearly all polar bears by 2100
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Question
How many planets have been discovered?
Life
Butterflies are showing us how wildlife will cope with climate change
Features
Life
Hundreds of thousands of slime moulds can merge together to find food
Regulars
Environment
Arctic explorers find unusually thin ice as a result of climate change
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Last Word
This week’s new questions
Regulars
Life
Why icy moons like Europa are our best bet for finding alien life
Features
Life
First life on Earth may actually have been built from both RNA and DNA
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Video
What is life and how did it evolve? We're getting closer to the answer
Video
Space
We know the best spots to look for alien life – can we get to them?
Culture
