Biruté Mary Galdikas passed away on March 24, 2026, at the age of 79. She spent more than 50 years studying orangutans in Borneo and fighting to protect them. Before she began her work, orangutans were the least understood of the great apes. She changed that. Her research formed the foundation of what we now know about orangutans. She was the first to learn what they ate, how they lived, how they moved, their long interbirth intervals, and so much more. Including the many threats to their survival. Her lifelong dedication inspired generations to care about orangutans and their forests, and to pursue careers in the field she helped shape. ⁠ I had the honor and privilege of interviewing Birute Galdikas in 2021, on the fiftieth anniversary of her study. We're re-releasing this episode in her honor. Links: Orangutan Foundation International Ways to get involved In Memory of Dr. Biruté Marija Filomena Galdikas: A remembrance by primatologist Erin Vogel Origin Stories is a project of The Leakey Foundation, a nonprofit organization dedicated to funding human origins research and outreach. Support this show and the science we talk about. Your donations will be matched by the Ann and Gordon Getty Foundation. leakeyfoundation.org/donate Credits: Produced by Ray Pang and Meredith Johnson. Sound design by Ray Pang. Our editor is Audrey Quinn. Thanks to Talain Blanchon for audio of Dr. Galdikas in the field and for recording our interview with Dr. Galdikas in his studio. And special thanks to Marcus Foley and Emily Patton for all their help. Archival lecture audio is from The Leakey Foundation archive. Music by Henry Nagle and Lee Roservere.