Space
Space germs: How can we avoid contaminating other worlds?
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origins of life
Space
Why sending messages to extraterrestrials is controversial
Comment
Physics
Can recreating black holes in the lab solve the puzzles of space-time?
Features
Life
The hunt for the South Island k艒kako, New Zealand鈥檚 long-lost bird
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Life
Why the origins of life remain a mystery 鈥 and how we will crack it
Features
Life
Was DNA pioneer Rosalind Franklin really a victim of scientific theft?
Analysis
Life
Surprising culprit found that killed 95% of a sea urchin population
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Life
Kelp forests capture nearly 5 million tonnes of CO2 annually
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Space
What are the prospects for life on the icy moons Europa and Enceladus?
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Life
Mysterious deep-sea holes may be burrows of tiny shrimp-like creatures
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Life
How did multicellular life evolve? Algae and yeast give some hints
Comment
Earth
Oxygen on early Earth may have come from quartz crushed by earthquakes
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