Why is ‘x’ the unknown? Posted on Thu, 2012-06-07 by almutei This is too cool to let it disappear in the twitter ether. [ted id=1469] TED: Terry Moore: Why is ‘x’ the unknown? Share this:Click to share on Twitter (Opens in new window)Click to share on Facebook (Opens in new window)MoreClick to email this to a friend (Opens in new window)Click to share on Pinterest (Opens in new window)Click to share on Pocket (Opens in new window)Click to share on Tumblr (Opens in new window)Click to share on LinkedIn (Opens in new window)Click to print (Opens in new window)Click to share on Reddit (Opens in new window)