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Scientists Thought They Had Found the World’s Only Cold-Blooded Mammal — The Truth Was Even Stranger
Scientists once claimed they’d found something impossible: a mammal that had evolved to become cold-blooded. No other mammal, living or extinct, has ever pulled that off. The claim came from an unlikely source, a small, goat-like animal that vanished from a Mediterranean island thousands of years ago, and it turned the obscure species into a…
Ancient Dinosaur Discovery Connects Extinction and Environmental Change
When visitors step into the Smithsonian’s National Museum of Natural History this holiday season, they will encounter more than a striking fossil behind glass. They will come face to face with a fragment of deep time, a survivor of processes that shaped Earth long before humans existed. The near-complete skull of a Pachycephalosaurus, a dome-headed…