What if we could live forever? Neil deGrasse Tyson takes us through life and death: if we could live forever what would life really mean? We explore why fresh flowers have meaning and why dogs make every day count. Learn about the CretaceousTertiary Event, The PermianTriassic Extinction, The Holocene Epoc, and how Earth is one killing machine.

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Science meets pop culture on StarTalk! Astrophysicist & Hayden Planetarium director Neil deGrasse Tyson, his comic cohosts, guest celebrities & scientists discuss astronomy, physics, and everything else about life in the universe. Keep Looking Up!

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00:00 Introduction: Life & Death
00:14 What If We Could Live Forever?
2:26 Flowers & Dogs
5:10 Prehistoric Extinctions & Earth as a Killing Machine
6:47 The Holocene Epoc