Space
Old Mars rover digs up evidence for drinkable water
NASA's Opportunity rover has found ancient aluminium-rich clays, which require neutral water to form, on the rim of Endeavour crater
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Life
Alien megaprojects: The hunt has begun
Features
NASA planet-hunter is injured and resting
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Life
Alien hunting: how to find DNA on Mars
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Life
Meteorite’s left-handed molecules a blow to ET search
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Life
Life: is it inevitable or just a fluke?
Features
Space
Budget cuts put alien search on hold
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Life
Alien-life claims spark monster mud-slinging
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Life
To boldly sow: Seeding the galaxy with Earthly life
Features
Life
Could we detect trees on other planets?
The shadows cast by alien trees should change the amount of light their host planet reflects as it orbits its star
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Life
Arsenic-based bacteria point to new life forms
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Life
Stingy aliens may call us on cheap rates only
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Environment
Look for Mars life with laughing gas
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Life
District 9: Science is the casualty in human-alien conflict
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