KQED Science Video Podcast

It's easy to find them in a can, but the lives of tuna in the open ocean have been a mystery to scientists. Thanks to a tagging program, Monterey Bay Area scientists are learning that these underwater sprinters travel thousands of miles around the Pacific. Now they're also working to discover even more about lives of sea turtles, sharks and other Pacific predators.

Everyday, women living in the refugee camps of Darfur, Sudan must walk for up to seven hours outside the safety of the camps to collect firewood for cooking, putting them at risk for violent attacks. Now, researchers at Lawrence Berkeley National Laboratory have engineered a more efficient wood-burning stove, which is greatly reducing both the women's need for firewood and the threats against them.

A growing number of children's advocates and political leaders are worried that our culture's disconnection from nature is harming kids. Concerns about the long-term consequences on children's physical and emotional well-being have spawned a national movement to "leave no child inside." QUEST explores why we need nature, and efforts to encourage children to play outdoors.

Bay Area engineer Ugo Conti has sailed the world, but has always suffered from seasickness. A queasy stomach became his motivation to design "Proteus" - a spider-like sea craft made for smoother sailing. He designed the Wave Adaptive Modular Vessel to cross the ocean while flexing with the movement of the waves. And it may change the way people take to the high seas.

Want to find out why Great Horned Owls can turn their heads 270 degrees? Join us as we meet Olivia the Owl at the Oakland Zoo.

Around the world, frogs are declining at an alarming rate due to threats like pollution, disease and climate change. Frogs bridge the gap between water and land habitats, making them the first indicators of ecosystem changes. Meet the Bay Area researchers working to protect frogs across the state.

Watch a interview with Dr. Tyrone Hayes, Professor of Integrative Biology at UC Berkeley about his research into the effects of the pesticide Atrazine on frogs.

Think you know about frogs? Test your knowledge with our QUEST Quiz.

Is your face giving you away? Meet renowned psychologist Paul Ekman, who has spent his life studying how our facial muscles involuntarily reveal emotions like sadness and anger. His comprehensive catalog of human facial expressions has become an important tool for everyone from law enforcement agents to animators.

Some of the most passionate astronomers don't even need to leave their own backyards. QUEST meets the amateur stargazers in the Bay Area who are making important observations about the cosmos and inventing tools at home to do it.

What does our use of bottled water say about us? Take a look from the perspective of an anthropologist from the distant future.

It's the largest laser beam in the world and it's being built in the Bay Area. The National Ignition Facility at Lawrence Livermore National Laboratory will shoot tremendous bursts of energy at an area the size of a pencil eraser. The goal? To create fusion ignition, a potential clean energy source for the 21st century.

In the early 1900's, researchers from UC Berkeley's Museum of Vertebrate Zoology traveled around California and created detailed records of the wildlife they found. A century later, scientists are revisiting the same sites - they've found that global warming is already having an impact.

QUEST teams up with Make Magazine to construct the latest must have, do-it-yourself device hacks, whiz-bang gizmos and techno do-dads.

1/2 HOUR WEB-ONLY QUEST SPECIAL: the complete November 2007 interview with astronomer Dr. Jill Tarter of SETI Institute on site at the Allen Telescope Array in Hat Creek, CA. Tarter is generally thought to be the inspiration for Ellie Arroway, the character played by Jodi Foster in the classic science fiction movie "Contact."