Click above to listen to part 2 of Elements Never Forget, featuring Roland Pease, science reporter in the U.K., describing how oxygen suddenly became abundant in Earth’s atmosphere 2.3 billion years ago, leading to lifeforms (like the pond scum pictured above) adapting to metabolize it.

Elements Never Forget:
Part 1: Inna Vishik / Helium Shortage
Part 2: Roland Pease / Oxygen Glut
Part 3: Nitrogen Ice Cream
Part 4: Mark Stoyer / New Elements

Podcast also available on PocketCasts, SoundCloud, Spotify, Google Podcasts, Apple Podcasts, and RSS.

2026 Webby Award Nominee
for our three part series on the 20th anniversary of Hurricane Katrina

Big Picture Science is an immersive radio show and podcast that reveals the unexpected connections in science.

Our Skeptic Check episodes take a critical look at extraordinary science claims and pseudoscience.

Don’t settle for a science snapshot. Get the big picture. 

Hosted By

Molly Bentley Executive Producer and Co-Host, Big Picture Science  

Seth Shostak Producer and Co-Host, Big Picture Science
Senior Astronomer, SETI Institute

Latest episodes