From baby teeth to ‘conveyor belt’ molars, here’s why humans—and other mammals –grow and replace their teeth in such ...

Some calm waters hide a shark that can leave the ocean and push deep into rivers, following routes most predators cannot. We trace how bull sharks survive the freshwater challenge, why juveniles treat ...

In this video, we explore intriguing topics and entertaining moments, including the origin story of the villainous Pickler, a ...