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Travel through billions of years of history to meet some of the earliest life forms.
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Cruise into the Cretaceous, when astonishing creatures like T. rex dominated the planet.
0:30
Join Emily as discovers surprising truths hidden in the fossil record.
2:43
Emily Graslie talks to Kylie Ferguson, who made a surprising discovery as a kid.
2:35
Emily Graslie and Dr. Eileen Grogan look for fossil fish in Montana.
3:18
The soil in North Dakota has clues from the day the dinosaurs went extinct.
3:16
Emily meets up with geologist Dr. Mark Fahrenbach at Custer State Park.
11:09
Emily travels to central Montana in search of ancient fish fossils.
5:13
Emily talks to Dr. Kelli Trujillo about the bacteria that made our planet oxygen-rich.
