The Pangolin Extinction Vortex
This shy, strange-looking, nocturnal mammal has been poached nearly to extinction.
The Enduring Mysteries of the Narwhal’s Tusk
Why don't we know what narwhals' tusks are for? New footage suggests they use the tusks to stun fish before eating then, but some mysteries remain.
Venom Found in the Unlikeliest of Animals
Venom is used by some surprising animals, including mammals.
Keeping Up with the Carnivores
Biological research tracks predatory carnivores, who are increasingly veering into North American cities.