Living things need nitrogen in order for our cells to function, and there's plenty in the air, but it's impossible for most of us to access. Learn how the nitrogen cycle brings it to us in this episode of BrainStuff.
Learn more about your ad-choices at https://www.iheartpodcastnetwork.com

BrainStuff Classics: Why Are Some Americans Cancelling Columbus Day?
07:16

American Versus British English: What Are Biscuits, Muffins, and Pudding?
09:51

How Do Sunspots Work?
14:22