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Science of Earthquakes (2:32)

Over a million earthquakes occur every year, but most happen in remote areas and on the ocean floor. Find out what causes earthquakes, and how they are monitored. With Dr. Maya Tolstoy of the Lamont-Doherty Earth Observatory, Columbia University.

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Videos (5)

  • Science of Earthquakes
    Science of Earthquakes

    Video Clip (2:32)

    Over a million earthquakes occur every year, but most happen in remote areas and on the ocean floor. Find out what causes earthquakes, and how they are monitored. With Dr. Maya Tolstoy of the Lamont-Doherty Earth Observatory, Columbia University.

    Video Clip (2:32)
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    Mega Disasters: San Francisco Earthquake

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    Multiple fault lines that run through California put San Francisco at risk for a catastrophic earthquake.

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    Earthquakes of the New Century

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    Get the facts on the deadliest earthquakes to rattle the planet since the year 2000.

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Read More about San Francisco–Oakland earthquake of 1989

On October 17, 1989, a 7.1-magnitude earthquake hit the San Francisco Bay Area, killing 67 people and causing more than $5 billion in damages.

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