Guest Jane Willenbring is a geoscientist who studies accelerating coastal erosion. The challenge lies not in understanding why coasts are receding today, but in determining what they looked like a thousand years ago to know how much they’ve changed — a secret revealed in coastal rocks through isotopes shaped by cosmic radiation. But measurement is only one part of the equation, she says. We must now think about erosion’s impact on humans, Willenbring tells host Russ Altman on this episode of Stanford Engineering’s The Future of Everything podcast.