What Caused The Cambrian Explosion?

If you’re struggling, consider therapy with BetterHelp #ad. Click https://betterhelp.com/historyofearth for a 10% discount on your first month of therapy with a credentialed professional specific to your needs. 9:48 - Part 1 - The Cambrian Explosion 29:40 - Part 2 - A Real Explosion? 44:51 - Part 3 - Animals From The Earth 1:07:27 - Part 4 - Tipping Points Written & researched by Leila Battison. Check out her channel:-    / @drleilabattison   Video & script edited by Pete Kelly. Check out his channel:-    / @petekellyhistory   Narration by David Kelly. Check out his channel:-    / @voicesofthepast   Thumbnail Art by Ettore Mazza - Image Credits: Matteo De Stefano/MUSE Avancna https://en.wikipedia.org/wiki/Trilobo... Oleg Kuznetsov - 3depix - http://3depix.com/ 3D Epix Inc. http://www.ediacaran.org/fractofusus.... F. S. Dunn, C. G. Kenchington, L. A. Parry, J. W. Clark, R. S. Kendall & P. R. Wilby https://www.nature.com/articles/s4155... Spriggina ovata, South Australia. Image: Dr Alex Liu Daderot - Own work https://en.wikipedia.org/wiki/Spriggi... spriggina.html https://en.wikipedia.org/wiki/Dickins... Aleksey Nagovitsyn (Alnagov https://commons.wikimedia.org/wiki/Fi... https://commons.wikimedia.org/wiki/Fi... https://en.wikipedia.org/wiki/Trilobi... https://en.wikipedia.org/wiki/Trilobi... https://en.wikipedia.org/wiki/Tardigrade http://www.ediacaran.org/charnia-maso... Photo: Bob Thomas/Popperfoto via Getty Images/Getty Images