An Instagram post about the last two northern white rhinos references a scenario conservationists have warned us about for ...

When a species comes off the Endangered Species Act list, is that the end of the story? No. While a win is a win, it’s never the end; responsibility for these species often shifts to states, Tribes, ...

Over the years, we’ve turned research, anecdotes and everyday experiences into a whole constellation of stories about the way we impact our world. Still, some voices may be missing from the ...

When species interact with each other, they do not evolve separately, but do so together. This process is called coevolution. Natural selection favors predators that are better at capturing prey, and ...

Imagine looking up at a sky so full of birds, they block out light from the sun. Passenger pigeons (Ectopistes migratorius) used to fly in flocks of hundreds of millions, maybe even billions, of birds ...

People sometimes introduce animals and plants into new areas. When these harm their new environment, we call them invasive species. In some places, invasive species have changed the natural world ...

A species is a distinct group of organisms and the most basic unit used to measure life on Earth. However, there’s no single definition of a species, meaning this vital concept in biology can be ...

If you visit Algonquin Provincial Park in Ontario, you may hear the high, lonesome howls of wolves. You may even be lucky enough to catch a glimpse of a distant pack racing through the forests. But ...