Renowned Scientist, Author, and Director of the Hayden Planetarium at The American Museum of Natural History to Join Critically Acclaimed Science News Program in its Second Season on PBS PBS Press ...
NEIL DEGRASSE TYSON (Host/Astrophysicist, American Museum of Natural History): On this episode of NOVA scienceNOW: Long before the dinosaurs disappeared, life on Earth was nearly wiped out. SAMUEL ...
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