There's plenty that archaeologists and paleontologists can learn from the bones and other artifacts left behind by ancient creatures and mankind's own ancestors. Researchers can figure out what they ...
New Mexico's White Sands National Monument is a desolate place; sparse vegetation pokes up throughout its salt flats and white gypsum dunes. But the area wasn't always a barren landscape. At the end ...
Among the glistening dunes of New Mexico's White Sands National Monument, scientists have been taken aback by the discovery of footprints. The footprints belong to the extinct giant ground sloth, ...
SAO PAULO (AP) — Sloths weren’t always slow-moving, furry tree-dwellers. Their prehistoric ancestors were huge — up to 4 tons (3.6 metric tons) — and when startled, they brandished immense claws. For ...
Ancient sloths ranged in size from tiny climbers to ground-dwelling giants. Now, researchers report this body size diversity was largely shaped by sloths’ habitats, and that these animals’ precipitous ...
Large animals started going extinct at the end of the Pleistocene, just as both climate change and a new predator — Homo sapiens — arrived on the scene. But despite humans’ brutal legacy of killing ...
Rearing on its hind legs, the giant ground sloth would have been a formidable prey for anyone, let alone humans without modern weapons. Tightly muscled, angry and swinging its fore legs tipped with ...
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