Episode 178 - Ears

The Common Descent Podcast

Common Descent

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

4.8 • 764 Ratings

🗓️ 12 November 2023

⏱️ 144 minutes

🔗️ Recording | iTunes | RSS

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Summary

Listen up! The world around us is full of sound, and animals have evolved numerous strategies for receiving and interpreting those sounds. In this episode, we discuss the many varieties of sound-sensing organs and how they’ve evolved repeatedly throughout life history. We’ll also explore some of the other important things that ears can do, including the ever-important task of maintaining our equilibrium. In the news: carnivorous lampreys, caterpillar legs, early dragonflies, and the sea star body plan. Time markers:Intro & Announcements: 00:00:00News: 00:06:10Main discussion, Part 1: 00:36:45Main discussion, Part 2: 01:30:15Patron question: 2:14:05 Check out our website for this episode’s blog post and more:http://commondescentpodcast.com/ The End of the Year Q&A submission form is open! Submit your question here:https://forms.gle/EeAMhEfnatVWqmnS9 Join us on Patreon to support the podcast and enjoy bonus content: https://www.patreon.com/commondescentpodcast Got a topic you want to hear about? Submit your episode request here:https://commondescentpodcast.com/request-a-topic/ We’re an Audible Affiliate Partner! Use this link for a 30-day free trial to Audible: https://www.audibletrial.com/CommonDescent Lots more ways to connect with us: https://linktr.ee/common_descent 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.
0:21.3	And hello, listeners.
0:22.7	Welcome to episode 178 of the Common Descent Podcast, a podcast where we talk about science and evolution and paleontology and Earth history.
0:32.1	Today, we will be talking about all of that in related to ears.
0:35.3	I'm listening.
0:36.3	Yeah.
0:37.3	This is a fun one.
0:39.8	We've done a couple of sensitive related episodes before.
0:43.9	We did eyes in episode 68 and we did smell in episode 130.
0:48.2	So we are now adding hearing or ears to that.
0:51.8	And ears are crazy complex. Life has evolved ways to hear multiple times in multiple
0:59.3	groups, sometimes within the same major groups, with different mechanical solutions to turning
1:06.6	sound into nerve impulses. Yeah, and that's not even the only thing that ears do. No. So there's multiple
1:13.5	jobs going on. We'll be discussing what is an ear, you know, whatever it's parts, what jobs are
1:19.1	done inside the ear, what are the varieties of ears that we see because there's a bunch of very
1:25.5	different kinds, and what does the evolution of
1:28.9	these complex organs look like. This episode, as all of our episodes are, was requested, so that's
1:35.6	why we're talking about it. And it was requested, either ears hearing or other associated parts
1:41.3	of the ear, by Alejo, Taterboy, Toy, Brian, Carrie, Rebecca, Mad Jack,
1:48.9	hyphen, Jesse, John and Janice, and Kyla.
1:52.7	Thanks, everybody.
	...

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