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Watch Leo take on the Jetovator
Watch Dougal go scuba diving in Fierce Earth
Watch episodes of all new Fierce Earth
Watch exclusive Fierce Earth: Extreme clips
What happens when the ground shakes, the seas rise up and the air tears itself apart? The Fierce Earth team move in, taking on the most powerful forces on the planet.
Every Thursday at 6.05pm on CBBC and CBBCHD.
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