Few organizations can rival the National Park Service when it comes ... joke out of White Sands alleged that giant sloths, formally called Harlan’s ground sloth, ran amok within the park.

By Jeanne Timmons Ground ... us to make inferences about things like metabolic rate,” and from that, he added, “we can draw comparisons” between the physiology of today’s smaller sloths ...

For a long time, scientists believed the first humans to arrive in the Americas soon killed off these giant ground sloths ...

Bustos at White Sands National Monument in Holloman Air Force Base, NM, and colleagues was titled, "Footprints preserve terminal Pleistocene hunt? Human-sloth interactions in North America." ...

Move over, Hyperion, there’s a new tree giant in town. In a video shared to the Redwood National ... The park service nonetheless said the Harlan’s ground sloth was a “mega-fun” addition ...