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 interesting theory. On this site, visitors can watch a preview of the program, and then make their way through six interactive sections, including "The Extinction Debate" and "Stone Age Toolkit". In "The Extinction Debate" visitors will be introduced to the wide range of scientific theories that have been actively debated and discussed in regards to this extinction. Moving on, the "Stone Age Toolkit" allows users to play a lively matching game where they can learn about the role that ten different primitive artifacts played in the lives of humans thousands of years ago. The site is rounded out by a teacher's guide and a set of additional links and readings.
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