Episode 98 - Species and Speciation

The Common Descent Podcast

Common Descent

Science, Natural Sciences, Education, Earth Sciences, Science:natural Sciences

4.8 • 764 Ratings

🗓️ 18 October 2020

⏱️ 123 minutes

🔗️ Recording | iTunes | RSS

🧾️ Download transcript

Summary

When we study life, past or present, we talk a lot about species, their evolution, their diversity, their extinction, and more. But we don’t 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 – and controversial! – than it may seem. In this episode, we’ll touch on the basics and discuss why scientists get so worked up about species and speciation. In the news: a glass-ified brain, a Cretaceous croc, a long walk, and a sensitive dinosaur. Time 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 Check out our blog for bonus info and pictures:http://commondescentpodcast.wordpress.com/ We were featured on Pallet University, talking about science and Pokémon! https://www.youtube.com/watch?v=noKhRDVa03o Find merch at the Common Descent Store! http://zazzle.com/common_descentFeaturing art by Rob Soto! https://www.rob-soto.com/ Follow 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 The Intro and Outro music is “On the Origin of Species” by Protodome. More music like this at http://ocremix.org. Musical Interludes are "Professor Umlaut" by Kevin MacLeod (incompetech.com). Licensed under Creative Commons: By Attribution 3.0http://creativecommons.org/licenses/by/3.0/

Transcript

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0:00.0	You're listening to the Common Descent Podcast.
0:19.0	Hello, David. Hello, Will. And hello, listeners.
0:22.2	Welcome to episode 98 of the Common Descent Podcast.
0:25.9	Boy, we're running out of double digits.
0:27.7	It's so close.
0:29.8	Today's episode topic is species and speciation.
0:34.0	Which a foundational topic that will have far fewer solid answers than many of our listeners may be expecting.
0:42.1	Yeah, this is for as simple a term as it seems like it should be where it's like, yeah, we know what a species is species.
0:48.9	We talk about new species all the time and ancient species all the time.
0:52.2	It's actually a much more complex and far-reaching
0:56.8	topic. Oh, yeah. Then you might think. Several, yeah, lots of biologists and paleontologists saw the
1:04.9	title of this episode and went, who, boy. Yes, exactly. They know. It's going to be a great discussion. Yeah, so this episode we're going to discuss what is a species. It's going to be a great discussion.
1:11.5	Yeah, so this episode we're going to discuss what is a species.
1:14.3	It's going to be kind of a two part.
1:16.0	What is a species and how do we get new species?
1:19.4	Or how do we think we get new species and what do we think a species is?
1:24.3	We're going to discuss the definitions of species and what those mean, how we use the concept of species,
1:36.9	and what are the limitations to how we can study this term, especially in the fossil record.
1:42.1	And then we'll go through how can a group of organisms split or give rise to new groups
1:51.1	of organisms, a new species?
1:53.1	Speciate.
1:54.1	Speciation.
	...

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