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2017 was one of the top 3 hottest years on record

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Chameleons add glow-in-the-dark bones to long list of cool traits

One woman met a stray dog — and changed everything for a forgotten breed

Do lobsters feel pain?

With puppies and kittens, who needs the Super Bowl?

These biological illustrations are as profound today as they were in the 19th century

Divers discover world's longest underwater cave in Yucatan Peninsula

Moscow got only 6 minutes of sunlight in December