In the clean, cool mountain streams of Pennsylvania, a strange and ancient animal slithers through the water. Snake-like, ...

Most flowering plants need pollinators, relying on bees, bats, birds and more to help them produce seeds and fruits. Sometimes, in rarer cases, a small carnivore puts themself up for the job. Now, ...

Exploring history, the animal kingdom, and impossible achievements, the greatest documentaries ever made transport viewers to ...