The monstrous terror bird once roamed the earth, but it didn't manage to survive into the modern day. If it did, though, the ...

Before the Spanish introduced modern horses to the New World, horses roamed wild in North America, then they disappeared, but ...

The extinct mammals were about five times larger than a grizzly bear–and filled caves with their poop.

Given their abundance in American backyards, gardens and highway corridors these days, it may be surprising to learn that ...

The Santa Barbara Maritime Museum and Photographer Chuck Graham tell a visual story of the remarkable recovery.

Massive Megatherium sloths once stood as large as Asian elephants, ripping foliage off treetops with prehensile tongues like ...

A new report co-authored by a Canadian researcher warns that more than one-fifth of pollinator species it studied in North America are at risk of extinction. Enjoy the latest local, national and ...

Across North America, three-fourths of bird species are in decline, according to a sweeping study of avian populations published Thursday, the latest sign of a slow-moving extinction crisis that ...

Butterflies are disappearing at an alarming rate in the US. Find out which species are the most impacted and what can be done ...

Parrots are among the most vibrant and loquacious birds in the world — and are typically found in equatorial habitats. Here ...

Molecular clues from collagen in old bones are teaching us about the lives, movements, and demise of Ice Age megafauna like mammoths.