The origin of life on Earth is a mystery—there are no fossils of the earliest life forms.

But, fast-forward a few hundred million years, and—voila—we see traces of life, from microbes to—zip ahead another billion years—creatures with six legs, a tail and a thorax. But how did these early life forms develop?

Join us for a journey to Mexico where pools of microbes could tell us about life’s earliest moments. Also, the turning point in the history of animals on Earth: the Cambrian explosion. Finally, he may not be a mad scientist, but we’ll meet a chemist who is trying to reproduce early life in the lab.

Guests:

  • Max Bernstein, chemist at NASA Ames Research Center
  • Bruce Lieberman, geologist at the University of Kansas
  • Bertha Shostak
  • Charles Bentley

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

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