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Every four years, we get an extra day in February. Who decided this, and what's the point? Follow Us! https://twitter.com/LifeNoggin https://facebook.com/LifeNoggin Click here to see more videos: https://alugha.com/LifeNoggin Life Noggin is a weekly animated educational series. Whether it's science, pop culture, history or art, we explore it all and have a ton of fun doing it. Life Noggin Team: Animation by Steven Lawson Director/Voice: http://lifenogg.in/patgraziosi Executive Producer: http://lifenogg.in/IanDokie Director of Marketing: http://lifenogg.in/JaredOban Writer: http://lifenogg.in/KayleeYuhas Sources: http://www.slate.com/blogs/bad_astron http://www.public.asu.edu/~mjwhite/Si http://www.astronomynotes.com/nakedey http://blogs.discovermagazine.com/bad#.WqE8kGThBaE

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