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WASHINGTON, September 2, 2014 � Best-selling author Sam Kean stops by Reactions this week to debunk the myth of the Megalodon, the 50-foot super shark that, despite what “Shark Week� may lead you to believe, is long extinct. Learn all about it at .

Kean’s book, “The Disappearing Spoon: And Other True Tales of Madness, Love and the History of the World from the Periodic Table of the Elements,� is getting the Reactions treatment in a 10-episode video series produced for the newly launched American Association of Chemistry Teachers (AACT). In this episode, Kean unravels the myth of a living Megalodon, explaining how the element manganese holds the key.

To view all 10 episodes of the Disappearing Spoon video series, become an AACT member at .

Subscribe to the series at and follow us on Twitter .

The American Chemical Öйú365betÖÐÎĹÙÍø is a nonprofit organization chartered by the U.S. Congress. With more than 161,000 members, ACS is the world’s largest scientific society and a global leader in providing access to chemistry-related research through its multiple databases, peer-reviewed journals and scientific conferences. Its main offices are in Washington, D.C., and Columbus, Ohio.