Name: When Nature Strikes: Landslides @Nbclearn
Uploaded: 2020-05-05T01:29:31-0400
Duration: 8 min 17 s
Description: Landslides occur when material like debris, rock, and soil become dislodged from the earth and slide downward at speeds that can approach 100 miles per hour. David Montgomery at the University of Washington studies past and present landslides to try to understand what causes them. When Nature Strikes is produced by NBC News Learn in partnership with the National Science Foundation.

Uploaded May 2020 | Updated September 2026, 1 week ago

Colonel Irene Zoppi has served in the U.S. Army for over 25 years, from active duty to the reserves. Zoppi talks about her experiences in the military, including her role in the 1991 Persian Gulf War, and how she balances being in the reserves with her family life and job as a college professor.

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