Why you should watch The Voice, Young Sheldon, and more
A group of people travel back to Earth's prehistoric past to start a new civilization as the planet is dying in 2149 in this sci-fi drama.
First Aired: November 28, 2011
Taylor confronts Mira in the jungle, where he learns more about her plans; Jim closes in on the Sixer mole; Zoe faces a tough choice concerning the dinosaur she's been caring for.
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