Secrets of the Earth

Season 1

9 episodes · May 23, 2013

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  • S1E1

    Rain

    May 23, 201321m

    Raindrops aren't only formed from condensed water vapor; some result from micrometeorites, and others deliver bacteria from the upper atmosphere.

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  • S1E2

    Tsunamis

    May 23, 201321m

    Tsunamis form in the open ocean before making toward land. Science seeks not only to understand these giant waves but also predict them.

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  • S1E3

    Gravity

    Jun 13, 201321m

    Earthquakes can actually affect Earth's gravity, and the ability of scientists to map gravitational fiels has uncovered mysterious anomalies.

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  • S1E4

    Goldilocks

    Jun 20, 201321m

    Earth's distance from the sun is just right to sustain life, with neighbors Venus and Mars illustrating the impact of a slight difference in location.

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  • S1E5

    Magnetic Shield

    Jun 27, 201321m

    A metallic core at the center of the Earth turns the planet into a magnet, generating a field that protects life on the surface from cosmic radiation.

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  • S1E6

    Blizzards

    Jul 4, 201321m

    A visit to the researchers at a Colorado storm lab and an examination of lake-effect snow in northern New York reveal the science of blizzards.

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  • S1E7

    Tides

    Jul 18, 201321m

    Water levels rise up to 50 feet at high tide in Canada's Bay of Fundy, while the Turnagain Arm in Alaska experiences 10-foot-high tidal "bore waves."

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  • S1E8

    Volcanoes

    Jul 25, 201321m

    As evidenced by the 1815 eruption of Indonesia Mt. Tambora, volcanoes can profoundly impact the weather, producing lightning, ash and acid rain.

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  • S1E9

    Strangest Places

    Aug 1, 201321m

    The world's most astonishing sites include extreme underwater ecosystems, steamy subterranean worlds and stratling igneous formations of lava rock.

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