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Australia: Monsters

Some 250 million years ago, some of the largest, most dangerous reptiles ruled this land.

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Making North America: Origins

The epic 3 billion-year story of how our continent came to be. From the palm trees that once flourished in Alaska to titanic eruptions that nearly tore the Midwest in two, discover how forces of almost unimaginable power gave birth to North America. (Airs July 15 at 9 pm on PBS)

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