Researchers in Costa Rica have uncovered ancient mastodon and giant sloth fossils, shedding light on the prehistoric giants that once roamed the region.

Costa Rica's Museo Nacional announces a groundbreaking fossil discovery in Cartago, including remains of a mastodon-like ...

SAN JOSE, Costa Rica — Researchers in Costa Rica have unearthed fossils from a mastodon and a giant sloth that lived as many as 40,000 years ago, officials announced Friday, calling it the biggest ...

This tier list analyzes the largest and most formidable ice age animals by comparing traits like predatory strategy, physical ...

It’s a phenomenon that was called the Homogenocene even before a similar term growing in popularity, the Anthropocene, was coined in 2000. If the Anthropocene describes a planet transformed by humans, ...

Some tropical land regions may warm more dramatically than previously predicted, as climate change progresses, according to a ...

Three localities in New Mexico have provided significant findings in the understanding of human occupation in North America. After studying deposits containing extinct bison bones in Folsom and ...

A sediment record millions of years old revealed that the tropical Andes heated up dramatically when atmospheric CO2 levels ...

Some tropical land regions may warm more dramatically than previously predicted, as climate change progresses, according to a new CU Boulder study ...

In the first of a new series, curator Dr Neil Adams shares the stories and science of the fossil mammal collection.