Earth
When crocodiles roamed the Arctic
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Issue 2661
Levels of dangerous bacteria and parasitic worms in free-range, organic pork are higher than in farmed pigs given antibiotics
Growing scientific evidence suggests that homosexuality is both common in nature and hard-wired from birth
The poles were once covered by lakes and forests instead of ice. Anil Ananthaswamy finds out what the world was like in the last great warming
A geometrical interpretation of the famous monument is refreshing, but misses a broader discussion of Bronze Age culture, says Nick Saunders