Neil deGrasse Tyson Explains Earth Day

Will we always need an Earth Day? On this explainer, Neil deGrasse Tyson and comic co-host Chuck Nice explore Earth Day, the mass extinction of the dinosaurs, and the state of life on Earth. Does planet Earth need saving or just the life that lives on it? We talk about the dinosaurs and whether they’d still be here without their mass extinction event. What if the dinosaurs had a space program? Learn about keyhole asteroid trajectories and asteroid mining. We discuss why is it that we take the Earth for granted, the limits of human greed, and imagine a world where everyone is scientifically literate. Could one day we outgrow the need for Earth Day? Get the NEW Cosmic Queries book (5/5 ⭐s on Amazon!): https://amzn.to/3dYIEQF Support us on Patreon: https://www.patreon.com/startalkradio FOLLOW or SUBSCRIBE to StarTalk: Twitter: http://twitter.com/startalkradio Facebook: https://www.facebook.com/StarTalk Instagram: https://www.instagram.com/startalk About StarTalk: Science meets pop culture on StarTalk! Astrophysicist & Hayden Planetarium director Neil deGrasse Tyson, his comic co-hosts, guest celebrities & scientists discuss astronomy, physics, and everything else about life in the universe. Keep Looking Up! #StarTalk #NeildeGrasseTyson 0:00 - Introduction 0:38 - Should We Have Earth Day? 2:00 - Would Dinosaurs Still Be Here Without An Impact? 4:09 - What Is A Gravitational Keyhole? 5:36 - How We Take Science For Granted 7:05 - Is Greed Good? 9:46 - Closing Notes