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? 🦄 Get the extra part for free here:https://www.patreon.com/universetoday📺 VIDEO VERSIONhttps://youtu.be/Ppc3zzMTJTs📰 GUIDE TO SPACE Newsletter No ads. Subscribe for FREE: https://universetoday.com/newsletter🎧 PODCASTSUniverse Today: https://universetoday.fireside.fm/Astronomy Cast: http://www.astronomycast.com/📩 CONTACT FRASERfrasercain@gmail.com⚖️ LICENSECreative Commons Attribution 4.0 International (CC BY 4.0)Support Universe Today Podcast