QUEST follows a group of UC Berkeley scientists to the top of a 320-foot redwood in Mendocino County. Only 5 percent of these ancient redwoods survived our voracious desire for their hardy and plentiful wood. Now scientists are trying to predict how the remaining ones and their descendants might fare in the face of climate change in the decades to come.

Learn more about redwoods and this video with the Producer’s Notes.

  • Lou Judson

    I loved your report this morning – but though the climber said they don’t use spikes, but climb ropes so as to not damage the tree. You did nto say how they got the ropes up there! I had to watch the video to find out thet use crossbows to loop a rope over a branch, Hope that doesn’t hurt the branch!

    I live in Marin, near the bay in Novato and we have a 50 or 60 foot redwood out behind our home – but recent apartment construction has diverted the small stream at its base, and it is slowly dying, A smaller one next to it has already gone. How can we save our own local redwood?




Gabriela Quirós

Gabriela Quirós is a video producer for KQED Science and the coordinating producer for Deep Look. She started her journalism career more than 20 years ago as a newspaper reporter in Costa Rica, where she grew up. She won two national reporting awards there for series on C-sections and organic agriculture, and developed a life-long interest in health reporting. She moved to the Bay Area in 1996 to study documentary filmmaking at the University of California-Berkeley, where she received master’s degrees in journalism and Latin American studies. She joined KQED as a TV producer when its science series QUEST started in 2006 and has covered everything from Alzheimer’s to bee die-offs to dark energy. She has won three regional Emmys and has shared awards from the Jackson Hole Wildlife Film Festival, the Society of Professional Journalists and the Society of Environmental Journalists. Independent from her work in KQED's science unit, she produced and directed the hour-long documentary Beautiful Sin, about the surprising story of how Costa Rica became the only country in the world to outlaw in vitro fertilization. The film aired nationally on public television stations in 2015.


Joshua Cassidy

Joshua is a Digital Video Producer for KQED Science and the Lead Producer for Deep Look. After receiving his BS in Wildlife Biology from Ohio University, he went on to participate in marine mammal research for NOAA, USGS and the Intersea Foundation. He also served as the president of The Pacific Cetacean Group, a nonprofit organization dedicated to teaching students K-6 about whales. Josh studied science and natural history filmmaking at San Francisco State University and Montana State University.

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