Extras
See how secret letters written by Mary, Queen of Scots, were finally decoded.
Discover how two revolutionary ancient inventions changed the course of humanity forever.
An unprecedented discovery could reveal new information about Cleopatra鈥檚 reign.
Learn about Marlee Matlin, Oscar-winning actress and champion of the Deaf community.
Marlee Matlin visits the house she grew up in Morton Grove, Illinois.
Marlee Matlin refused to allow a hearing actor to play her Deaf husband in the 2021 film 鈥淐ODA.鈥�
Henry Winkler took Marlee Matlin in for two years while she recovered from a turbulent time.
A new generation of lions, cheetahs, and leopards comes of age in Botswana鈥檚 Okavango Delta.
Follow ancient humans鈥� journey into an icy and perilous new land.
Latest Episodes
The tiny bonnethead shark might be holding a secret or two.
Explore how we find and tag a massive and mysterious shark: the basking shark.
Could a shark prey unlock the secret to the ultimate shark repellent?
Learn about how Environmental DNA can be used for conservation management practices.
Shark scientists head over to La Jolla to investigate a natural 鈥渟hark spa.鈥�
Shark scientists Jasmin and Amani teach students how to collect data from wild sharks.