At age 75, Vadevino Alano keeps up a brisk pace as he strides through the forest on the way to the Armadillo’s Den — a spectacular cave in southern Brazil. When he reaches the cave’s opening, Alano is ...

For a long time, scientists believed the first humans to arrive in the Americas soon killed off these giant ground sloths through ... with the end of the last Ice Age, a time when an ice-free ...

The students found the bone last spring in an Ice Age sediment deposit, placing it in a ballpark between 11,500 years and 300,000 years old. It’s the first Jefferson’s ground sloth fossil ever ...

For a long time, scientists believed the first humans to arrive in the Americas soon killed off these giant ground sloths through ... with the end of the last Ice Age, a time when an ice-free ...

This illustration provided by researchers depicts a person carving an osteoderm from a giant sloth in Brazil about ... coincide with the end of the last Ice Age, a time when an ice-free corridor ...

Sloths were not always slow-moving, furry tree-dwellers. Their prehistoric ancestors were huge — up to four tonnes — and when startled, they brandished immense claws. For a long time, scientists ...

An illustration depicting a person carving an osteoderm from a giant sloth in Brazil about 25,000 ... to coincide with the end of the last Ice Age, a time when an ice-free corridor likely emerged ...

One significant area of research has been the paleoecology of giant ground sloths in the Brazilian Intertropical Region. Studies have utilized techniques to infer the diets of various sloth ...