When manual transmissions are put in reverse, they produce a loud, whirring noise. What's the culprit? Gears. Marshall Brain explains how helical and spur gears work in manual transmissions in this episode.

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When manual transmissions are put in reverse, they produce a loud, whirring noise. What's the culprit? Gears. Marshall Brain explains how helical and spur gears work in manual transmissions in this episode. Learn more about your ad-choices at <a href="https://www.iheartpodcastnetwork.com">https://www.iheartpodcastnetwork.com</a>

Whether the topic is popcorn or particle physics, you can count on BrainStuff to explore -- and explain -- the everyday science in the world around us.

BrainStuff

When manual transmissions are put in reverse, they produce a loud, whirring noise. What's the culprit? Gears. Marshall Brain explains how helical and spur gears work in manual transmissions in this episode.

Why does a manual transmission make a whirring noise?

https://api.omny.fm/orgs/e73c998e-6e60-432f-8610-ae210140c5b1/clips/439608bb-7daf-479b-b468-ae32009b20ef/transcript

The Batagaika crater (or, technically, megaslump) is a massive pit caused by thawing permafrost -- and it's only getting bigger. Learn what paleontologists have found there (and why geoscientists are worried about it) in today's episode of BrainStuff, based on these articles: https://science.howstuffworks.com/environmental/earth/geology/batagaika-crater.htm; https://science.howstuffworks.com/environmental/earth/geology/permafrost.htm

The Batagaika crater (or, technically, megaslump) is a massive pit caused by thawing permafrost -- and it's only getting bigger. Learn what paleontologists have found there (and why geoscientists are worried about it) in today's episode of BrainStuff, based on these articles: <a href="https://science.howstuffworks.com/environmental/earth/geology/batagaika-crater.htm">https://science.howstuffworks.com/environmental/earth/geology/batagaika-crater.htm</a>; <a href="https://science.howstuffworks.com/environmental/earth/geology/permafrost.htm">https://science.howstuffworks.com/environmental/earth/geology/permafrost.htm</a>

Why Is Siberia's Batagaika Crater Known as the Doorway to Hell?

https://api.omny.fm/orgs/e73c998e-6e60-432f-8610-ae210140c5b1/clips/4849221a-2c25-4dbf-be5a-b4ad0145651e/transcript

Investigating murders right here on planet Earth can be tricky -- how would it be handled in space? Who would even be in charge? Learn what current and future laws may apply in this classic episode of BrainStuff, based on this article: https://people.howstuffworks.com/murdered-in-space.htm

Investigating murders right here on planet Earth can be tricky -- how would it be handled in space? Who would even be in charge? Learn what current and future laws may apply in this classic episode of BrainStuff, based on this article: https://people.howstuffworks.com/murdered-in-space.htm

BrainStuff Classics: How Would Authorities Handle a Murder in Space?

https://api.omny.fm/orgs/e73c998e-6e60-432f-8610-ae210140c5b1/clips/ff722194-2285-4fd4-9b5a-b4ad01456537/transcript

Your sense of taste isn't just a chemical catalog of what's in a food or drink -- it's a complex physiological and psychological process. Learn what we know (and don't know!) about taste in today's episode of BrainStuff, based on this article: https://health.howstuffworks.com/mental-health/human-nature/perception/taste.htm

Your sense of taste isn't just a chemical catalog of what's in a food or drink -- it's a complex physiological and psychological process. Learn what we know (and don't know!) about taste in today's episode of BrainStuff, based on this article: https://health.howstuffworks.com/mental-health/human-nature/perception/taste.htm

How Does Taste Work?

https://api.omny.fm/orgs/e73c998e-6e60-432f-8610-ae210140c5b1/clips/49993887-168b-41f6-a073-b4ad011af78a/transcript

Why does a manual transmission make a whirring noise?

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