I answer 5 questions you guys asked over twitter. http://www.twitter.com/tweetsauce Google Science Fair: https://www.googlesciencefair.com/ VSAUCE2: null VSAUCE3: null Music by Jake Chudnow: null eyebrow man: http://www.ptleader.com/main.asp?SectionID=36&SubSectionID=55&ArticleID=15119 gravity anomalies: http://www.bgs.ac.uk/data/gravAndMag.html ring on reddit: http://www.reddit.com/r/AskReddit/comments/s4ki4/if_a_giant_ring_was_built_on_mile_high_supports/ notch: https://twitter.com/notch rope around Earth puzzle: http://www.daviddarling.info/encyclopedia/R/rope-around-the-Earth_puzzle.html word record for longest hair: http://www.guinnessworldrecords.com/longest-hair-(female)/ eye floaters: http://en.wikipedia.org/wiki/Floater Wikipedia size in volumes: http://en.wikipedia.org/wiki/Wikipedia:Size_in_volumes