The Common Descent Podcast
Episode 148 - Gliding

Episode 148 - Gliding

September 17, 2022

Powered flight is hard, and evolution has only produced it a few times. Gliding, however, is much easier and much more common. In fact, there is an astonishing diversity of gliding organisms to be found in our modern world as well as in the fossil record, with an incredible variety in the adaptations they use to sail through the sky. This episode, we’ll explore what it takes to glide and what patterns we see in gliding evolution, and we’ll also geek out about all the amazing sizes, shapes, and strategies of gliders.

In the news: coral mutations, African dinosaurs, croc brains, and ancient amputation.

Time markers:
Intro & Announcements: 00:00:00
News: 00:07:00
Main discussion, Part 1: 00:41:30
Main discussion, Part 2: 01:28:30
Patron question: 02:22:00

Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/

Support Mouse’s classroom!
https://www.donorschoose.org/classroom/mx-hecht

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The Common Descent Podcast
1735 W State of Franklin Rd. Ste 5 #165
Johnson City, TN 37604

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 3.0
http://creativecommons.org/licenses/by/3.0/

Episode 147 - Genetics

Episode 147 - Genetics

September 3, 2022

For many years, scientists pondered the question: how and why do offspring inherit traits from their parents? And key to the answer to that question is another question: what determines an organism’s traits in the first place? The pursuit of these answers ultimately led to the modern field of genetics, which itself is crucial to the study of evolution. This episode, we address just a few key points on this vast topic, with a focus on how our understanding of genetics allows us to interpret the history of evolution on our planet.

In the news: early fruit-eating, giant Australian birds, beaver evolution, and human speech.

Time markers:
Intro & Announcements: 00:00:00
News: 00:06:00
Main discussion, Part 1: 00:37:30
Main discussion, Part 2: 01:08:30
Patron question: 02:00:00

Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/

Join us on Patreon to support the podcast and enjoy bonus content! https://www.patreon.com/commondescentpodcast 

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You can email us at commondescentpodcast(at)gmail.com
Or send us physical mail at:
The Common Descent Podcast
1735 W State of Franklin Rd. Ste 5 #165
Johnson City, TN 37604

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 3.0
http://creativecommons.org/licenses/by/3.0/

Episode 146 - The Jurassic-Cretaceous Transition

Episode 146 - The Jurassic-Cretaceous Transition

August 20, 2022

Every period of geologic time is distinguished by its own environmental and ecological features, and every boundary between time periods is characterized by change. The boundary between the Jurassic Period and the Cretaceous Period is mostly marked by mystery. Was there a mass extinction? Were there catastrophic changes? Where even is the boundary exactly? In this episode, we’ll discuss the answers – or lack thereof – to these questions and more as we explore this surprisingly enigmatic time in Earth history.

In the news: croc conservation, diving whales, aquatic mammal-cousins, and sauropod feet.

Time markers:
Intro & Announcements: 00:00:00
News: 00:06:15
Main discussion, Part 1: 00:36:30
Main discussion, Part 2: 01:00:30
Patron question: 01:33:30

We recently appeared on the Juras-Sick-Park-Cast!
https://jurassickparkcast.blogspot.com/2022/07/episode-20-when-dinosaurs-ruled-earth.html

Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/

Join us on Patreon to support the podcast and enjoy bonus content! https://www.patreon.com/commondescentpodcast 

Or make a one-time donation via PayPal: https://tinyurl.com/4c68u4hp

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You can email us at commondescentpodcast(at)gmail.com
Or send us physical mail at:
The Common Descent Podcast
1735 W State of Franklin Rd. Ste 5 #165
Johnson City, TN 37604

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 3.0
http://creativecommons.org/licenses/by/3.0/

Episode 145 - Photosynthesis

Episode 145 - Photosynthesis

August 6, 2022

We live in a solar-powered world. Photosynthesis is the process by which some organisms (notably plants and cyanobacteria) harness the energy of sunlight to power their own metabolism, in the process creating the sugars (food) which provide a source of energy for all sorts of other organisms, not to mention releasing oxygen as well. Photosynthesis is the reason our planet is the way it is, from the diversity of life to the composition of the atmosphere. In this episode, we discuss the diversity of photosynthesis and photosynthesizers, what we know about the evolutionary history of the process, and how it has profoundly changed the world.

In the news: freshwater plesiosaurs, endothermy evolution, whale shark diets, and bone-crushing dogs.

Time markers:
Intro & Announcements: 00:00:00
News: 00:08:30
Main discussion, Part 1: 00:43:30
Main discussion, Part 2: 01:45:30
Patron question: 02:31:00
Please forgive our mismatched audio in the Intro and News sections.

We recently appeared on the Juras-Sick-Park-Cast!
https://jurassickparkcast.blogspot.com/2022/07/episode-20-when-dinosaurs-ruled-earth.html

Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/

Join us on Patreon to support the podcast and enjoy bonus content! https://www.patreon.com/commondescentpodcast 

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You can email us at commondescentpodcast(at)gmail.com
Or send us physical mail at:
The Common Descent Podcast
1735 W State of Franklin Rd. Ste 5 #165
Johnson City, TN 37604

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 3.0
http://creativecommons.org/licenses/by/3.0/

Episode 144 - Evolutionary Gigantism and Dwarfism

Episode 144 - Evolutionary Gigantism and Dwarfism

July 23, 2022

The history of evolution is full of species of unusual size, big and small. But the factors that lead to evolutionary miniaturization or embiggening can be quite varied and are not all fully agreed-upon by scientists. This episode, we discuss what it means for life to evolve huge or tiny, what trends researchers have identified in body size evolution, and which of those trends actually holds up to further scrutiny.

In the news: krait venom, a frozen pup, parental water bugs, and giant storks.

Time markers:
Intro & Announcements: 00:00:00
News: 00:06:00
Main discussion, Part 1: 00:39:30
Main discussion, Part 2: 01:32:30
Patron question: 02:10:30

IT’S SNAKE MONTH! Check out our Snake Month activities on our social media, Discord, and Patreon!

Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/

Join us on Patreon to support the podcast and enjoy bonus content! https://www.patreon.com/commondescentpodcast 

Or make a one-time donation via PayPal: https://tinyurl.com/4c68u4hp

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You can email us at commondescentpodcast(at)gmail.com
Or send us physical mail at:
The Common Descent Podcast
1735 W State of Franklin Rd. Ste 5 #165
Johnson City, TN 37604

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 3.0
http://creativecommons.org/licenses/by/3.0/

Saving Snakes with Hiral Naik

Saving Snakes with Hiral Naik

July 16, 2022

Happy Snake Month!

In this bonus episode, we discuss snake conservation and geek out about snakes with special guest Hiral Naik of Save the Snakes. We talk about what it takes to save snakes, why snakes are so worthy of our attention and respect, and why education is such a major part of snake conservation!

Follow Hiral on
Twitter: @HiralNaik25
Instagram: @hirals_hive

Save The Snakes: https://savethesnakes.org/ 
Twitter: @savethesnakes
Instagram: @savingsnakes
Snake Education and Community Awareness Program (SECAP): https://www.secap.info/

World Snake Day: https://www.snakes.ngo/wsd/

Check out more Snake Month activities on our social media, Discord, and Patreon (links below)!

Check out our blog for more info about us and our episodes:
http://commondescentpodcast.wordpress.com/

Join us on Patreon to support the podcast and enjoy bonus content! https://www.patreon.com/commondescentpodcast 

Or make a one-time donation via PayPal: https://tinyurl.com/4c68u4hp

Find merch at the Common Descent Store! http://zazzle.com/common_descent

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You can email us at commondescentpodcast(at)gmail.com
Or send us physical mail at:
The Common Descent Podcast
1735 W State of Franklin Rd. Ste 5 #165
Johnson City, TN 37604

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org

Episode 143 - Monitor Lizards

Episode 143 - Monitor Lizards

July 9, 2022

Monitor lizards are charismatic, surprisingly diverse, full of surprising biological features, and on top of all that, they include the largest terrestrial lizards in history. Also, they’re closely related to snakes (it is Snake Month, after all). That’s a cool group of lizards! In this episode, we discuss what makes these lizards so unique and fascinating, and we dive into their long but often mysterious fossil record to address some major questions about monitor evolution.

In the news: vampire squids, dinosaur eggs, octopus intelligence, and pickled snakes.

Time markers:
Intro & Announcements: 00:00:00
News: 00:06:45
Main discussion, Part 1: 00:38:00
Main discussion, Part 2: 01:19:30
Patron question: 01:57:00

IT’S SNAKE MONTH! Check out our Snake Month activities on our social media, Discord, and Patreon!

Links to the organizations we mentioned in the Intro:
National Network of Abortion Funds: https://abortionfunds.org/about/
Answer: https://answer.rutgers.edu/page/aboutusintro

Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/

Join us on Patreon to support the podcast and enjoy bonus content! https://www.patreon.com/commondescentpodcast 

Or make a one-time donation via PayPal: https://tinyurl.com/4c68u4hp

Find merch at the Common Descent Store! http://zazzle.com/common_descent

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PodBean: https://commondescentpodcast.podbean.com/
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You can email us at commondescentpodcast(at)gmail.com
Or send us physical mail at:
The Common Descent Podcast
1735 W State of Franklin Rd. Ste 5 #165
Johnson City, TN 37604

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 3.0
http://creativecommons.org/licenses/by/3.0/

Episode 142 - Phytosaurs

Episode 142 - Phytosaurs

June 25, 2022

Take a walk along the waterways of the Late Triassic, and you could easily think it was a world full of crocodiles! But in fact, those are not crocs, but phytosaurs, a group of predatory reptiles that represent not only one of the oldest groups of carnivorous reptiles to achieve a near-global distribution, but also one of evolution's most famous cases of convergent evolution. So, what features did phytosaurs share with crocs? Where did they differ? And just how croc-like were their lifestyles? Listen in and find out!

In the news: dinosaur belly buttons, tiny frogs, snake venom, and giant dwarf crocs.

Time markers:
Intro & Announcements: 00:00:00
News: 00:05:45
Main discussion, Part 1: 00:41:00
Main discussion, Part 2: 01:11:30
Patron question: 01:47:00

IT’S CROC MONTH! Check out our Croc Month activities on our social media, Discord, and Patreon!

We recently made a guest appearance on Third Pod From the Sun, where we discussed the K-Pg mass extinction! https://thirdpodfromthesun.com/2022/06/10/extinctions-dinosaurs-a-big-rock-andclimate-change/

Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/

Join us on Patreon to support the podcast and enjoy bonus content! https://www.patreon.com/commondescentpodcast 

Or make a one-time donation via PayPal: https://tinyurl.com/4c68u4hp

Find merch at the Common Descent Store! http://zazzle.com/common_descent

Join the Common Descent Discord server! https://discord.gg/CwPBxdh9Ev

Follow and Support us on:
Twitter: https://twitter.com/CommonDescentPC
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You can email us at commondescentpodcast(at)gmail.com
Or send us physical mail at:
The Common Descent Podcast
1735 W State of Franklin Rd. Ste 5 #165
Johnson City, TN 37604

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 3.0
http://creativecommons.org/licenses/by/3.0/

Silver Screen Science - Jurassic World: Dominion

Silver Screen Science - Jurassic World: Dominion

June 20, 2022

Once again, we return to the Jurassic franchise! And as usual with these movies, there’s lots to discuss about the portrayal of ancient animals, scientific concepts, and scientists.

Another trilogy concludes – Jurassic World: Dominion (2022)

_

IT’S CROC MONTH! Check out our Croc Month activities on our social media, Discord, and Patreon!

Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/

Join us on Patreon to support the podcast and enjoy bonus content! https://www.patreon.com/commondescentpodcast 

Or make a one-time donation via PayPal: https://tinyurl.com/4c68u4hp

Find merch at the Common Descent Store! http://zazzle.com/common_descent

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You can email us at commondescentpodcast(at)gmail.com
Or send us physical mail at:
The Common Descent Podcast
1735 W State of Franklin Rd. Ste 5 #165
Johnson City, TN 37604

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Conserving Crocs with Dr. Marisa Tellez

Conserving Crocs with Dr. Marisa Tellez

June 17, 2022

Happy Croc Month!

In this special episode, we talk croc conservation and geek out about crocs with special guest Dr. Marisa Tellez of the Crocodilian Research Coalition. We learn about what it’s like to study crocs in the wild, we discuss the importance of public education, and we hear some of Marisa’s amazing croc tales!

Follow Marisa on Instagram and Twitter: @crocparasites13

CRC Info:
Webpage: www.crocodileresearchcoalition.org
Facebook and Pinterest: Crocodile Research Coalition
Instagram: @crocodileresearchcoalition
Twitter: @CrocResCoal
TikTok: crc_crocresearchcoal

Check out more Croc Month activities on our social media, Discord, and Patreon (links below)!

Check out our blog for more info about us and our episodes:
http://commondescentpodcast.wordpress.com/

Join us on Patreon to support the podcast and enjoy bonus content! https://www.patreon.com/commondescentpodcast 

Or make a one-time donation via PayPal: https://tinyurl.com/4c68u4hp

Find merch at the Common Descent Store! http://zazzle.com/common_descent

Follow, Join, and Support us on:
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YouTube: https://www.youtube.com/channel/UCePRXHEnZmTGum2r1l2mduw
PodBean: https://commondescentpodcast.podbean.com/
iTunes: https://itunes.apple.com/us/podcast/the-common-descent-podcast/id1207586509?mt=2

You can email us at commondescentpodcast(at)gmail.com
Or send us physical mail at:
The Common Descent Podcast
1735 W State of Franklin Rd. Ste 5 #165
Johnson City, TN 37604

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

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