This Element Is Critical for Extraterrestrial Life. And It's Not Carbon

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Searching for life is complicated. Which elements are critical and which ones are not? Which can we count as biosignatures and which can occur without life? Which role does Phosphorus play in all that?

🟣 Guest: Harry Brodsky
https://www.colorado.edu/geologicalsc...

00:00 Intro
01:36 Phosphorus and Earth life
21:42 Biosignatures and Phosphorus
38:00 Bonus part: Underwater Biology
38:51 Current obsessions
45:04 Final thoughts

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