SciShow

Walrus Flash Mob & 20 Years of Pot Research (2014x155)

Ημερομηνία προβολής: Οκτ 10, 2014

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.