Life
A radical new theory rewrites the story of how life on Earth began
Features
extraterrestrial life
Life
Marine kaleidoscope shows the beauty of coral reefs
Regulars
Question
How many planets have been discovered?
Life
Hundreds of thousands of slime moulds can merge together to find food
Regulars
Life
Butterflies are showing us how wildlife will cope with 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
Life
Earth's first life may have fuelled itself with a metal metabolism
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Life
Life's other mystery: Why biology's building blocks are so lop-sided
Features
