What do different wags mean? Canines know, and thanks to a new study, humans do too.
Could a gigantic octopus have devoured ancient marine giants?
A virtual recreation of the world's biggest known terrestrial
animal shows that it lumbered along at around 5 miles per hour.
The species actually survived the mass extinction event of 250 million years ago and lived another 120 million years.
The eyes of reindeer change from gold to winter blue to cope with seasonal darkness.
Close-up photography reveals some of the spookiest spiders and insects anywhere on the planet.
One was about to have babies and the other was teeming with parasites.
Spiders from deep time have surfaced in images of unprecedented detail this week at a geological meeting in Denver.
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