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NOVA scienceNOW producer Joe McMaster asks our series host, Neil deGrasse Tyson, why everyone should know about the Permian extinction.Produced by Susan K. Lewis. Audio editing by David Levin. Interview conducted by Joe McMaster. NOVA is produced by WGBH in Boston. Major funding for NOVA scienceNOW is provided by Pfizer, the National Science Foundation, the Howard Hughes Medical Institute, the Alfred P. Sloan Foundation, and public television viewers.This material is based upon work supported by the National Science Foundation under Grant No. 0229297. Any opinions, findings, and conclusions or recommendations expressed in this material are those of the authors and do not necessarily reflect the views of the National Science Foundation.For more fun science stories, visit our Web site at http://www.pbs.org/nova/sciencenow