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Walrus: 1978 Study

Episode: Walrus Flash Mob & 20 Years of Pot Research. 35,000 walruses all hanging out at the same beach in Alaska? Why? Does global warming have anything to do with it? And what have we learned after 20 years of studying the effects of marijuana? SciShow News explains. http://goo.gl/YmWiwB #FullPodcastAvailable #Podcasts

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