The true science behind our most popular urban legends. Historical mysteries, paranormal claims, popular science myths, aliens and UFO reports, conspiracy theories, and worthless alternative medicine schemes... Skeptoid has you covered. From the sublime to the startling, no topic is sacred. Weekly since 2006.
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episode 630: The Apes Who Learned Sign Language
Although many regard Koko as an ape who used sign language, science tells us that ability probably doesn't exist.