Some species go extinct obviously and fast, but just as often, the process can be hard to detect until it’s too late.

The extinction crisis might be even worse than we think, because we tend to mostly pay attention to terrestrial vertebrates.

Scientists explore the causes--climate change, habitat destruction, and more--that decimated animals and humans alike, from Ice Age to Internet Age.

New research confirms that the next mass extinction is in progress, and we’re the cause.