What is a Leap Year?

submitted by eduvideos on 01/28/14 1

Help support videos like this: www.cgpgrey.com/subbable **CGPGrey T-Shirts for sale!**: goo.gl/1Wlnd Grey's blog: www.cgpgrey.com/blog/ Also check out MinutePhysics' video: www.youtube.com/watch?v=53glKEPzElA & SciShow: www.youtube.com/watch?v=HnDsXhQHrEw

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