Park Physics with Sean Lally
Friday, January 17, 2014
for fun.
http://sploid.gizmodo.com/the-sum-of-1-2-3-4-5-until-infinity-is-so-1503066071/@caseychan
(Thanks, Kyle!)
http://geekdad.com/2014/01/1000000000000000000000-years/
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