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When we study life, past or present, we talk a lot about species, their evolution, their diversity, their extinction, and more. But we don\u2019t often slow down to discuss what we really mean by that. What is a species? How and where do new species arise? It turns out this topic is much more complicated \u2013 and controversial! \u2013 than it may seem. In this episode, we\u2019ll touch on the basics and discuss why scientists get so worked up about species and speciation.\nIn the news: a glass-ified brain, a Cretaceous croc, a long walk, and a sensitive dinosaur.\nTime markers: Intro & Announcements: 00:00:00News: 00:05:30Main discussion, Part 1: 00:36:30Main discussion, Part 2: 01:13:00Patron question: 01:57:30\nCheck out our blog for bonus info and pictures:http://commondescentpodcast.wordpress.com/\nWe were featured on Pallet University, talking about science and Pok\xe9mon! https://www.youtube.com/watch?v=noKhRDVa03o\nFind merch at the Common Descent Store! http://zazzle.com/common_descentFeaturing art by Rob Soto! https://www.rob-soto.com/\nFollow and Support us on: Patreon: https://www.patreon.com/commondescentpodcast Twitter: https://twitter.com/CommonDescentPCFacebook: https://www.facebook.com/commondescentpodcastInstagram: @commondescentpodcast PodBean: https://commondescentpodcast.podbean.com/ iTunes: https://itunes.apple.com/us/podcast/the-common-descent-podcast/id1207586509?mt=2YouTube: https://www.youtube.com/channel/UCePRXHEnZmTGum2r1l2mduw\nThe Intro and Outro music is \u201cOn the Origin of Species\u201d by Protodome. More music like this at http://ocremix.org.\nMusical Interludes are "Professor Umlaut" by Kevin MacLeod (incompetech.com). Licensed under Creative Commons: By Attribution 3.0http://creativecommons.org/licenses/by/3.0/