
Watch S2, EP3: The Dawn of Mammals with Fubo for $0 Today
New discoveries reveal prehistoric mammals were more varied and numerous than previously thought.
New discoveries reveal prehistoric mammals were more varied and numerous than previously thought.
How to watch
More episodes
Ancient Earth
"Ancient Earth"Life forms that lived in the Permian, Triassic and Cretaceous periods, which began 250 million years ago.
Ancient Earth
S2, EP3 "The Dawn of Mammals"New discoveries reveal prehistoric mammals were more varied and numerous than previously thought.
Ancient Earth
S2, EP2 "The Mystery of the Feathered Dragons"Thanks to new technologies, paleontologists can show that there were far more feathered dinosaurs than previously believed.
Ancient Earth
S2, EP1 "What Killed the Giant Insects?"Giant insects once dominated the earth before the dinosaurs and thanks to new technologies, paleontologists can now recreate the missing branches of the tree of life.
More documentary shows
See allJail
Some of the world's toughest city and county jails as seen through the eyes of corrections officers.
Forensic Files
Eagle-eyed technical experts prove there is no such thing as a perfect crime as they assemble the pieces every criminal leaves behind. Dramatic crime re-creations and, sometimes, part of the investigations are a staple of the series. Some of the re-creations include alternate versions of the crimes, which are disproved by science. The show's episodes follow each case from the initial investigation until it reaches its legal resolution.
World's Most Evil Killers
An in-depth look at some of the world's most dangerous murderers.
To Catch a Smuggler
Homeland Security at JFK International Airport deals with daily issues ranging from fraudulent visas to human trafficking.