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Cornell University

Map of the United States with NE, IA, KS, MO, AR, OK, NM, and TX marked. Pawnee, OK is at the epicenter of a circle indicating an earthquake. Caption: A 5.6 magnitude earthquake northeast of Oklahoma City.
5 minutes 11 seconds
Grade Level: 10 - 12
Person holding a starfish and pointing to one of the arms. Caption: It was clear something was in the water,
4 minutes 38 seconds
Grade Level: 7 - 12