Earth
Overprotection may be hampering hunt for Mars life
Sterilisation measures for spacecraft are so strict that we are wasting too much money in our missions to the Red Planet, argues a pair of Mars scientists
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Space
Old Mars rover digs up evidence for drinkable water
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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
News
Life
Life: is it inevitable or just a fluke?
Features
Space
Budget cuts put alien search on hold
News
Life
Alien-life claims spark monster mud-slinging
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Life
To boldly sow: Seeding the galaxy with Earthly life
If there is no life on other planets, let's send it there. Stephen Battersby reports
Features
Life
Could we detect trees on other planets?
News
Life
Arsenic-based bacteria point to new life forms
News
Life
Stingy aliens may call us on cheap rates only
News
Environment
Look for Mars life with laughing gas
News