Long before today’s slow-moving tree dwellers, sloths were towering giants. In this episode, we look back at the age of the giant ground sloth - massive creatures that once roamed the Americas, ...

New research painted a more accurate picture of the megafauna that spread widely around the Americas before they went extinct.

A strange cast of ferocious predators and giant herbivores ... like present-day sloths in South America, these sloths were one of the strangest animals of the ice age. They weighed as much ...