Wildfire smoke may harm whales and dolphins: Here’s what we know

This bird pesticide is legal, but recent deaths are stoking controversy

Polar bears appear where they never were before

Arizona’s border wall will include openings too small for many animals

¡Hasta nunca, 2020!

A tiger’s roar can be heard as far as two miles away

Looking for the disappearing legendary ancient deer herd

Fact: Beavers can mitigate climate change

Which Are Smarter, Red or Gray Squirrels?

How Cheetahs Keep Their Heads Still While Sprinting