Long ago, Earth had animals that looked, moved, and lived very differently from those seen today. Some were gentle. Some were curious. Some trusted humans too easily. Sadly, a few of them disappeared ...

Earth looked much different not just millions, but even decades and centuries ago. Many animal species that once existed are nowhere to be found. From human activity to climate change, new animals ...

The late 1900s were a time of rapid change for our planet, and unfortunately, some of its most unique inhabitants did not survive. Between the 1980s and 1990s, several animal species disappeared ...

Just because a species is presumed extinct doesn’t mean it’s gone forever. Here are four glowing examples of this unique, and felicitous, phenomenon. Not all species that have been classified as ...

New fossil research shows how human impacts, particularly through the rise of agriculture and livestock, have disrupted natural mammal communities as profoundly as the Ice Age extinctions. Fossil ...