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View Resource NOVA: Last Extinction

What, some ask, was the "last extinction?" It's a fair query indeed, and it happens to be understood as the period approximately 13,000 years ago when large animals were killed off across the North American continent. The exact cause of this extinction remains unknown, but this engaging program offered as part of the long-running NOVA series on public television offers up one particularly...

View Resource Mass Extinction

This set of multimedia resources, produced for the NOVA television broadcast 'Mass Extinction', explains mass extinctions in general, and in particular the extinction event that occurred at the end of the Permian period, in which more than 90 percent of all marine species died out. An interactive feature presents some of the theories about what caused this event, and lets users vote for the one...

View Resource Did an Impact Trigger the Permian-Triassic Extinction?

This resource, authored by David Morrison, contains the National Aeronautics and Space Administration's Astrobiology Institute news story on new evidence of a 251-million year-old impact crater off the western coast of Australia that may have caused the "Great Dying", the Permian-Triassic extinction event.

View Resource Mammoth Extinction

Science Netlinks offers this Web-based lesson plan for grades 9-12. The lesson invites students to explore various hypotheses regarding the extinction of the woolly mammoth, with a particular focus on infectious disease. Students use provided worksheets to conduct online research on the topic, focusing on a 1998 American Museum of Natural History expedition to the Arctic circle to hunt for...

View Resource Extinction: Forest Fires Among the Trees of Life

This outline of a presentation on extinction reviews the various catastrophic events that could lead to extinction and lists the five great mass extinctions. Climate change is identified as the linking factor and recovery is also explained.

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