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Mass Extinction

Grades: 6-12
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This video segment adapted from NOVA scienceNOW examines a developing theory that might explain a 250-million-year-old "murder mystery." While several possible causes have been ...

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Accessibility: Auditory, Visual, Caption, Transcript

Permitted use: Stream, Download and Share

© 2009 WGBH Educational Foundation. All Rights Reserved.

Benchmarks for Science Literacy
NSTA National Science Education Standards


NOVA scienceNOW: "Mass Extinction"

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Adapted from NOVA scienceNOW: "Mass Extinction." Third party materials courtesy of American Time-Lapse (Avalanche Inc.), Cells ALIVE/Quill Graphics, Indiana State Museum, United States Air Force (USAF), and Vulcan Productions, Inc.

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