The world’s largest dam removal project is underway along the 250-mile Klamath River in California and Oregon. By the end of 2024, four of the river’s six dams will be demolished. UC Davis scientists are studying whether it will help salmon populations rebound. The fishes’ ear bones could hold clues to their future. In this episode of Unfold, host Amy Quinton discusses the topic with co-host Kat Kerlin, who has written a multimedia feature story about whether restoring the river to its natural state will also restore decimated salmon populations.

In this episode:

Rob Lusardi, aquatic ecologist, UC Davis Center for Watershed Sciences

Beth Rose Middleton Manning, professor, UC Davis Department of Native American Studies

Barry McCovey, director of the Yurok Tribal Fisheries Department

You may not know it, but artificial intelligence may be responsible for the food on your table. AI is transforming nearly every aspect of our food system, from before a seed is planted up to the moment that food is eaten. AI could even help you decide what food you should eat based on your own health profile. In this episode of Unfold, we take you on AI’s journey from seed to plate. Host Amy Quinton and guest co-host Andy Fell examine the ways “Big Data Comes to Dinner.”

In this episode:

Ilias Tagkopoulos, director of the Artificial Intelligence Institute for Next Generation Food Systems at UC Davis

Christine Diepenbrock, assistant professor, UC Davis Department of Plant Sciences

Mason Earles, assistant professor, UC Davis Departments of Biological and Agricultural Engineering and Viticulture and Enology

Christopher Simmons, professor and chair, UC Davis Department of Food Science and Technology

Danielle Lemay, associate adjunct professor, UC Davis Department of Nutrition and USDA-ARS Western Health Nutrition Research Center

Dan Vincent, former president and CEO of Pacific Coast Producers

Can communication with a humpback whale teach us how to talk to extraterrestrials? Researchers from UC Davis and the SETI Institute want to find out. In the waters of Southeast Alaska, scientists believe they’ve had what might be the very first human-whale communication. The interaction was designed to eventually help us detect and interpret signals coming from outer space. In this episode of Unfold, you’ll hear about the scientists’ remarkable 20-minute “conversation” with a humpback named Twain and what we can learn by studying nonhuman communication on Earth.

In this episode:

Brenda McCowan, professor, UC Davis School of Veterinary Medicine

Josephine Hubbard, postdoctoral researcher, UC Davis

Laurance Doyle, astrophysicist, SETI Institute

Fred Sharpe, president, Olympic Peninsula Prairies

Imagine this: A man rubs a hormonal gel on his shoulders once daily, and after a few months his sperm count is zero, giving him and his partner peace of mind that they won’t conceive. That’s been the reality for one couple taking part in a clinical trial for male hormonal birth control at UC Davis Health – and around the world. In this episode of Unfold, we’ll learn more about how the gel works from the physician running the trial, and we’ll chat with the couple about how using the gel has changed their lives.

In this episode:

Mitchell Creinin, professor of obstetrics and gynecology and a family planning specialist at UC Davis Health

Matthew Treviño and Emily Fletcher, couple taking part in the clinical trial

Edward Elizarraras, clinical research coordinator at UC Davis Health

If you’ve ever asked Siri or Alexa something, you may have noticed you speak MORE LOUDLY, slowly or make your words “clear-er.” UC Davis researchers say most of us speak differently when talking to our devices. Voice artificial intelligence may even be changing our social behavior. In this episode of Unfold, we’ll talk to two UC Davis linguists to find out why voice AI is changing the way we operate.

In this episode:

Georgia Zellou, associate professor, Department of Linguistics, UC Davis

Michelle Cohn, postdoctoral researcher, Department of Linguistics, UC Davis

You’ve probably heard of groundwater — the water stored underground in aquifers that is a critical natural resource for the western U.S. Did you know that in California, these aquifers provide nearly 40 percent of the water used by farms and communities? During a drought, that figure is even more — nearly 60 percent. Groundwater is vital for growing crops. But California is using this underground resource faster than it can be replenished. In this episode of Unfold, learn how UC Davis researchers are working to make groundwater more sustainable while also helping California remain the most productive agricultural state in the nation.

In this episode:

Isaya Kisekka, director of the Agricultural Water Center at UC Davis

Thomas Harter, hydrologist and distinguished professor in the UC Davis Department of Land, Air and Water Resources

Mallika Nocco, assistant professor of Cooperative Extension in soil-plant-water relations and host of the podcast Water Talk

Patrick Brown, distinguished professor in the UC Davis Department of Plant Sciences

Matthew Roby, research scientist with the U.S. Department of Agriculture

Nick Edsall, orchard manager of Bullseye Farms in Yolo County, CA

Kirk Pumphrey, owner of Westwind Farms in Yolo County, CA

Unfold, a UC Davis podcast about science, innovation and discovery, unfolded through storytelling. We make complex topics relatable and reveal answers to questions you’ve always been curious about. Each episode takes you into the field with leading researchers and scholars who are working to tackle big picture problems – like how we’re going to feed a growing population, adapt to climate change and improve the health of people, animals and the planet. Hosted by public radio veteran Amy Quinton. Co-hosted by Kat Kerlin and Marianne Russ Sharp. Sponsor free. Learn more at ucdavis.edu/unfold.

There are two kinds of people in this world: Those who love daylight saving time, and those who don’t. UC Davis Health sleep medicine expert Heinrich Gompf is not a big fan of the clock change — or at least not the way we currently do it in the United States. In this episode of Unfold, he tells us why it’s so darn difficult for our bodies to adjust to the time change (the suprachiasmatic nucleus!) and offers tips to help you prepare and adapt when we do spring forward.

In this episode:

Heinrich Gompf, sleep researcher, Department of Neurological Surgery, UC Davis Health