Early humans may have spread across the Americas by specializing in giant prey such as mammoths, ground sloths, and gomphotheres.
A giant crocodilian that reached the size of a small truck once ruled the wetlands of South America. Fossils reveal that ...
Giants have featured in stories for millennia, but the reason why they don't exist helps explain the natural world ...
Explore 25 giant prehistoric ancestors of modern day animals! See colossal creatures like elephant-sized sloths and rhinos.
Although it sounds like a grade-B science fiction movie, fossils show that our ancestors once hunted and fought giant ground sloths. For the first time, scientists have uncovered fossilized footprints ...
Andrea Marshall studies manta rays and works to protect these intelligent ocean giants from population decline.
Why did Africa lose so many giant herbivores? New findings point to slow species formation, not faster extinction.