NOVA Presents
GBH
Overview
Episodes
Recent Episodes
DEC 11, 2025
How Fame Affects the Brain | Heather Berlin
Fame can hijack the brain like a drug—activating the same reward circuits that fuel a relentless chase for dopamine highs. Neuroscientist Heather Berlin reveals the antidote—and why even social media fame can trigger this cycle.
For more, check out the extended interview with Heather Berlin.
Learn more about NOVA and subscribe to our YouTube channel.
9 MIN
DEC 10, 2025
How Fossils Form and How to Find Them | Kirk Johnson
Fossilization isn’t luck - it’s geology. Paleobotanist Kirk Johnson explains how fossils only form in certain conditions, the tricks to finding them, and why one fossil leaf can lead to thousands more.
For more, check out the extended interview with Kirk Johnson.
Learn more about NOVA and subscribe to our YouTube channel.
15 MIN
DEC 8, 2025
Why Only Some Species Can Talk—and Dance | Erich Jarvis
Speech is rare in the animal kingdom because it requires a very specific brain architecture. Neuroscientist Erich Jarvis explains how duplicating neural pathways for movement unlocked language, dancing, and even advanced problem-solving in more than just humans.
For more, check out the extended interview with Erich Jarvis.
Learn more about NOVA and subscribe to our YouTube channel.
9 MIN
DEC 4, 2025
Evolution of New Species, Venom, Wings, and More | Extended Interview with Sean B. Carroll
How does evolution invent entirely new things, like limbs, wings, and venom? Evolutionary biologist Sean B. Carroll joins us to reveal the hidden rules behind nature’s creativity and the genetic toolkit that makes it possible. Carroll explains how the same set of genes can build wildly different creatures — from fruit flies to lobsters — simply by rewiring their genetic circuits. Discover why developmental biology holds the key to understanding evolution, how snake venom evolved, and why medicines like GLP-1 drugs and statins trace their origins to nature’s own innovations. Plus, what the emergence of new species tells us about life’s future and the surprising power of evolution to repurpose old parts in new ways.
Learn more about NOVA and subscribe to our YouTube channel.
—————————
Guest Bio:
Sean B. Carroll is a renowned evolutionary biologist and author whose work has inspired a deeper public understanding of evolution and the natural world. He is an Investigator at Howard Hughes Medical Institute (HHMI), where he was formerly Head of HHMI Tangled Bank Studios, and led the Department of Science Education from 2010-2023. He is also a Professor of Biology at the University of Maryland. His research focuses on genes that influence the evolution of animal diversity.
Timestamps
(00:00:00) How Does A New Species Evolve?
(00:12:54) The Process of Speciation: Use It or Lose It
(00:36:22) Development: What the Fruit Fly Taught Us
(00:55:37) The Evolution of Defense Mechanisms & Developing Medications
(01:19:55) The Role of Chance in Evolution
(01:24:22) Credits
83 MIN
DEC 3, 2025
How the Fruit Fly Revolutionized Biology | Sean B. Carroll
From legs on heads to missing eyes, fruit fly mutations exposed the genetic toolkit that builds all animals. Evolutionary Biologist Sean B. Carroll shows how these discoveries rewrote our understanding of evolution.
For more, check out the extended interview with Sean B. Carroll.
Learn more about NOVA and subscribe to our YouTube channel.
12 MIN