SMBC Physics: Why are stones round? feat. Zach Weiner

Zach Weiner of SMBC comics is guest illustrator on MinutePhysics! http://www.smbc-comics.com Why are some stones round and others flat? Tweet it - http://bit.ly/xNraRa Facebook it - http://on.fb.me/xCCsrl minutephysics is now on Google+ - http://bit.ly/qzEwc6 And facebook - http://facebook.com/minutephysics And twitter - @minutephysics Minute Physics provides an energetic and entertaining view of old and new problems in physics -- all in a minute! Music by Nathaniel Schroeder NEW ALBUM!! -- http://juliansaporiti.bandcamp.com/album/lusitania youtube: http://bit.ly/pakJLE Created by Henry Reich