What If a Physicist Drew a Comic Strip?

Meet Randall Munroe, physicist, former NASA roboticist, and the guy behind xkcd, one of the better Web comics out there (imho ~ http://somanyinterestingthings.blogspot.com/2011/07/fwiw-xkcd.html, http://somanyinterestingthings.blogspot.com/2012/08/just-because-binary-lol.html, http://somanyinterestingthings.blogspot.com/2014/06/eye-on-iss.html). He recently published What If?, a compilation of some of his answers to readers' (mostly hypothetical) questions (story, link to audio of interview): http://www.nytimes.com/2014/11/04/science/randall-munroe-the-creator-of-xkcd-explains-complexity-through-absurdity.html?hpw&rref=science&action=click&pgtype=Homepage&module=well-region&region=bottom-well&WT.nav=bottom-well&_r=0
   Stephen Colbert interviews Munroe on The Colbert Report and gets some more answers (video): http://thecolbertreport.cc.com/videos/ewijdy/randall-munroe