http://what-if.xkcd.com/142/
What If? 01/19/2016
http://what-if.xkcd.com/141/
What If? 01/11/2016
http://what-if.xkcd.com/140/
What If? 09/17/2015
http://what-if.xkcd.com/139/
What If? 08/03/2015
http://what-if.xkcd.com/138/
What If? 07/27/2015
http://what-if.xkcd.com/137/
What If? 07/13/2015
http://what-if.xkcd.com/136/
What If? 04/11/2015
http://what-if.xkcd.com/135/
What If? 04/04/2015
http://what-if.xkcd.com/134/
What If? 03/27/2015
http://what-if.xkcd.com/133/
What If? 03/16/2015
http://what-if.xkcd.com/132/
What If? 03/06/2015
http://what-if.xkcd.com/116/
What If? 10/14/2014
http://what-if.xkcd.com/115/
What If? 10/07/2014
http://what-if.xkcd.com/114/
What If? 09/30/2014
http://what-if.xkcd.com/113/
What If? 09/23/2014
http://what-if.xkcd.com/112/
What If? 09/16/2014
http://what-if.xkcd.com/111/
What If? 09/01/2014
http://what-if.xkcd.com/110/
What If? 08/26/2014
http://what-if.xkcd.com/109/
What If? 08/19/2014
http://what-if.xkcd.com/108/
What If? 08/12/2014
http://what-if.xkcd.com/107/
What If? 07/29/2014
http://what-if.xkcd.com/106/
What If? 07/22/2014
http://what-if.xkcd.com/105/
What If? 07/15/2014
http://what-if.xkcd.com/104/
What If? 07/08/2014
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