Click above to listen to part 2 of True Grit, featuring Pupa Gilbert, biophysicist and geobiologist at the University of Wisconsin, Madison, explaining how parrotfish produce sand as a byproduct of their digestion.
True Grit:
Part 1: Vince Beiser / World of Sand
Part 2: Pupa Gilbert / Sand Makers
Part 3: Joe Charbonnet / Engineered Sand
Part 4: Managing Sand in the Mississippi
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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.
Molly Bentley Executive Producer and Co-Host, Big Picture Science
Seth Shostak Producer and Co-Host, Big Picture Science
Senior Astronomer, SETI Institute
