IT'S A SCIENTIFIC FACT
'(<a href="http://www.j-archive.com/media/2007-04-27_J_30.jpg" target="_blank">Kelly of the Clue Crew reports.</a>) Give a length of paper a half-twist, join the ends, and you've created one of <a href="http://www.j-archive.com/media/2007-04-27_J_30a.jpg" target="_blank">these one-sided strips</a> named for a German topologist'
a Möbius strip