Scientists discover hyenas have a secret language of facial expressions and sounds that helps prevent fights from turning deadly

In 2003, China planted small islands of native trees along a degraded river; 20 years later they held only 19–30% of an intact forest’s diversity and biomass

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Why vultures don’t get sick from eating rotten meat; the remarkable adaptations that make them nature’s ultimate clean-up crew

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Wolfsbane and larkspur can paralyse in tiny doses; scientists found six enzymes that could help turn their chemistry into future medicines

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In 1996, Campbell’s keeled glass snail was declared extinct; 30 years later, more than 1,000 captive-bred snails have been returned to Norfolk Island

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