Link to the Show / Show NotesAs an astrophysicist, NOVA scienceNOW host Neil deGrasse Tyson has a unique view of the universe. Hear his "Cosmic Perspective" on why asteroid impacts here on Earth aren't necessarily a bad thing. NOVA scienceNOW airs five Tuesdays a year on PBS and is available for viewing 365 days a year online.Audio editing by David Levin. Major funding for NOVA scienceNOW is provided by the National Science Foundation and the Howard Hughes Medical Institute. Additional funding is provided by the Alfred P. Sloan Foundation.Visit the NOVA scienceNOW Web site at http://www.pbs.org/nova/sciencenow

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