Click above to listen to part 3 of You’ve Got Whale, featuring Peter Greenberg, professor of microbiology at the University of Washington, Seattle, describing the phenomenon of quorum sensing, wherein microbes use chemical signals to determine the size of their group, and take action when it reaches an appropriately high number.

You’ve Got Whale:
Part 1: Susanna Blackwell / Narwhal Natter
Part 2: Simon Gilroy / Shrub Signals
Part 3: Peter Greenberg / Quorum Sensing

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