Sonso Chimpanzees in Uganda began using a new method to drink water pooled in logs, 'moss-sponging.' Previously known to use balled-up leaves, the chimps began using this new technique with moss, researchers believe, because it is more effective at getting water into their mouths. But then, the technique spread to a neighboring community of chimps, leading researchers to believe that this is evidence of cultural evolution in chimpanzees, a behavior previously only thought to exist in humans. Researchers published their findings in a study in Proceedings of the Royal Society B: Biological Sciences back in 2018. This edition of Mongabay Reports is based on the popular article, Tool innovation shows cultural evolution at work among chimpanzees, by Nina Finley.  To also read & share the story, go here: https://news.mongabay.com/2019/02/tool-innovation-shows-cultural-evolution-at-work-among-chimpanzees/ Please invite your friends to subscribe to the Mongabay Newscast wherever they get podcasts, or download our free app in the Apple App Store or in the Google Store to have access to our latest episodes at your fingertips. If you enjoy this series, please visit www.patreon.com/mongabay to pledge a dollar or more to keep the show growing, Mongabay is a nonprofit media outlet and all support helps! See all our latest news from nature's frontline at Mongabay's homepage: news.mongabay.com or find us on Facebook, Twitter, and Instagram by searching for @mongabay. Photo Credit: Karibu, a member of the Sonso chimpanzee community in Uganda, uses a moss-sponge she made to sip water from a small rainwater pool. Scientists say the recent emergence and spread of this socially learned behavior is evidence of cultural evolution in chimpanzees. Image by Cat Hobaiter Please send feedback to submissions@mongabay.com, and thank you for listening.