After being extinct in England for centuries, beavers are making a comeback thanks to a new license permitting their wild release. How could their dam building prevent flooding and droughts?

As the world's largest surviving amphibian, Chinese giant salamanders haven't changed much in their 170 million years on earth. So what does life look like for these "living fossils"?

In the Amazon and tropical places around the world, armies of stingless bees spend their days collecting nectar from plants and flowers across the forest.