Episode 97 - Venom and Poison

The Common Descent Podcast

Common Descent

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

4.8 • 896 Ratings

🗓️ 4 October 2020

⏱️ 115 minutes

🔗️ Recording | iTunes | RSS

🧾️ Download transcript

Summary

Okay, that’s not a great title. More accurately, we’re discussing toxins, the substances that organisms produce for chemical defense or attack against each other. Toxins are found in practically all living things, they function as part of immune systems, poisonous defenses, and predatory venom, and they have all sorts of amazing effects from discomfort to death. In this episode, we’ll touch on who has them, what they do, and what we know about the long, complex evolutionary history of venom and biological poison. In the news: Spinosaurus teeth, an overlooked extinction, bird beaks, and Neanderthal DNA. Time markers: Intro & Announcements: 00:00:00News: 00:04:00Main discussion, Part 1: 00:33:30Main discussion, Part 2: 01:07:30 Patron question: 01:47:30 Check out our blog for bonus info and pictures:http://commondescentpodcast.wordpress.com/ 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.
0:18.5	Hello, Will. Hello, David. And hello world.
0:22.5	And welcome to episode 97 of the Common Descent podcast.
0:27.5	Today, we are discussing venom and poison.
0:31.8	Cool.
0:32.4	Which, as we will see as we get into the discussion, is a bad name for this episode.
0:37.0	Yeah, the terms regarding these things are...
0:40.5	We're going to start with terminology.
0:42.0	Yeah, they're kind of kooky.
0:43.0	But venom and poison are A, people will know what that means.
0:46.5	So you've been hooked. You're already listening. We got you.
0:49.6	And B, as I'll mention in a second, that's what was requested.
0:53.0	Yes.
0:53.7	So in this episode, we are going to talk about the enormous topic of poisonous and venomous substances created by life.
1:04.4	What they are, what they do, where you find them.
1:08.4	Their history, what we know about their evolution.
1:11.1	We'll talk about some examples and purported examples from the fossil record.
1:15.2	Gonna be a lot of fun.
1:16.7	The episode, as I said, was requested.
1:19.0	Some requests for venom.
1:20.3	Some requests for venom and or poison.
1:22.7	Some requests for venom and poison evolution.
	...

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