← Secrets of the Earth

Season 1

9 episodes · 2013

  1. 1Rain

    23 May 2013 · 21 min

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

  2. 2Tsunamis

    23 May 2013 · 21 min

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

  3. 3Gravity

    13 Jun 2013 · 21 min

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

  4. 4Goldilocks

    20 Jun 2013 · 21 min

    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.

  5. 5Magnetic Shield

    27 Jun 2013 · 21 min

    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.

  6. 6Blizzards

    04 Jul 2013 · 21 min

    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.

  7. 7Tides

    18 Jul 2013 · 21 min

    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."

  8. 8Volcanoes

    25 Jul 2013 · 21 min

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

  9. 9Strangest Placesfinale

    01 Aug 2013 · 21 min

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