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Roughly 252 million years ago, Earth experienced its deadliest known extinction. Known as the Permian–Triassic Mass ...
The largest sloth of all time was the size of an elephant. Known to paleontologists as Eremotherium, the shaggy giant ...
The Center for Biological Diversity put federal and state agencies on notice for violating federal laws while constructing an ...
A rare Triassic fossil site reveals North America's oldest known pterosaur, Eotephradactylus mcintireae, in what was once a ...
Past the agricultural revolution, there’s something of a sea-change in how dogs are found in the archaeological record. They ...
The planet has experienced five previous mass extinction events, the last one occurring 65.5 million years ago which wiped out the dinosaurs from existence. Experts now believe we’re in the midst of a ...
Data showing the migratory monarch's decline were too precautionary, prompting the IUCN to change its status from endangered to vulnerable.