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 refused to allow a hearing actor to play her Deaf husband in the 2021 film 鈥淐ODA.鈥�
Marlee Matlin visits the house she grew up in Morton Grove, Illinois.
Henry Winkler took Marlee Matlin in for two years while she recovered from a turbulent time.
Follow ancient humans鈥� journey into an icy and perilous new land.
The Xudum pride works together to bring down a huge buffalo, but things don't go according to plan.
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The West Texas desert has a surprising feature: a prehistoric ocean reef.
Meet the axolotl, Mexico City鈥檚 endangered, smiling salamander.
North Carolina鈥檚 Outer Banks may be one of the most dangerous coastlines in the world.
Florida's once endangered crocodiles are making a very unlikely comeback!
Scientists find the exact time of a massive quake using trees, soil and human records.
Can new scientific research help unravel the mystery of Cahokia's disappearance?
What happened to the once lush, now desert-like Colorado River Delta?
How is this groundbreaking experiment in Ecuador helping deforested rainforests recover?
Sea otters play a vital role in maintaining the balance of sensitive kelp forests.
Exploring LIDAR: Tech using lasers to reveal the deep history beneath our world鈥檚 surface.