What Rats are REALLY Saying, Cosmic Caffeine, Lamarck was RIGHT?!

The Weirdest Thing I Learned This Week

Popular Science

Science, Education, Society & Culture

4.6 • 2.2K Ratings

🗓️ 5 November 2025

⏱️ 63 minutes

🔗️ Recording | iTunes | RSS

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Summary

Tom Lum joins the show to reveal what rats are ACTUALLY saying to each other. Plus, Rachel talks about the color of the Universe, and Lauren explains one evolutionary exception. The Weirdest Thing I Learned This Week is a podcast by Popular Science. Share your weirdest facts and stories with us in our ⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠Facebook group⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠ or ⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠tweet at us⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠! ⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠Click here to learn more about all of our stories! ⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠ Links to Rachel's TikTok, Newsletter, Merch Store and More: ⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠https://linktr.ee/RachelFeltman⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠ Rachel now has a Patreon, too! Follow her for exclusive bonus content: ⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠https://www.patreon.com/RachelFeltman⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠ Link to Jess' Twitch: ⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠https://www.twitch.tv/jesscapricorn⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠ Link to all of Jess' content: ⁠https://www.jesscapricorn.com/⁠ -- Follow our team on Twitter Rachel Feltman: ⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠www.twitter.com/RachelFeltman⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠ Produced by Jess Boddy: ⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠www.twitter.com/JessicaBoddy⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠ Popular Science: ⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠www.twitter.com/PopSci⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠ Theme music by Billy Cadden: ⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠https://open.spotify.com/artist/6LqT4DCuAXlBzX8XlNy4Wq?si=5VF2r2XiQoGepRsMTBsDAQ⁠⁠⁠⁠⁠⁠⁠ Find your fall staples at Quince. Go to https://Quince.com/weirdest Learn more about your ad choices. Visit podcastchoices.com/adchoices

Transcript

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0:20.7	fall staples at Quince.
0:22.2	Go to quince.com slash Weirdest for free shipping on your order and 365-day returns.
0:27.5	Now available in Canada, too.
0:29.4	That's Q-U-I-N-C-E.com slash Weirdest to get free shipping and 365-day returns.
0:35.8	Quince.com slash weirdest.
0:41.5	At popular science, we report and write dozens of science and tech stories every week.
0:47.0	And while most of the stuff we stumble across makes it into our articles, we also find
0:51.4	plenty of weird facts that we just keep around the office.
0:54.6	So we figured, why not share those with you?
0:57.1	Welcome to the weirdest thing I learned this week from the editors of popular science.
1:01.3	I'm Rachel Feldman.
1:02.5	And I'm Lauren Leffert.
1:04.1	And I'm Tom Lung.
1:05.7	Tom, welcome to the show.
1:07.2	We're so excited to have you on.
1:08.5	Woo!
1:09.7	We!
1:14.6	Would you tell our listeners a little bit about yourself? Yes, I make science videos on the internet. There's a little thing called the
	...

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