Tonight

• 8:00pm

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  Planet Possible: Earth Day

  Hostile Planet: Ultimate Survivors

  In a rapidly changing world, animals that have adapted to survive in the most hostile places on Earth must now adapt to a new reality in the blink of an evolutionary eye. Facing everything from intrinsically hostile habitats and brutally punishing weather to the unrelenting threat of predators...

• 9:00pm

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  Planet Possible: Earth Day

  Hostile Planet: Masters of The Freeze

  Even in the mildest climates, life is a struggle, but animals living in the coldest regions of the world have bodies and habits adapted to survive so that they can survive in the face of both probabilities and each other. They live and die in harsh conditions, but the survivors are the actual...

• 10:00pm

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  Heroes of the Ocean With...

  Heroes of the Ocean With Sylvia Earle

  Oceanographer Sylvia Earle is probably more at home under the sea than she is on dry land. At least, that’s where this National Geographic Explorer in Residence has made her biggest impact as a scientist and storyteller. Called by Time Magazine a “Hero for the Planet”, Earle has been...

• 11:00pm

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  Planet Possible: Earth Day

  Kingdom of The Polar Bears - Bears - Episode 1