There is a road in Scotland where bicyclists have to pedal hard to ride downhill... but then coast uphill. Why? | For more World's Strangest, visit http://www.sciencechannel.com/tv-shows/worlds-strangest/#mkcpgn=ytsci1 Catch World's Strangest Tuesdays at 8/7c on Science Channel! Subscribe to Science Channel! | http://www.youtube.com/subscription_center?add_user=sciencechannel Check out SCI2 for infinitely awesome science videos. Every day. | http://bit.ly/SCI2YT Download the TestTube app! | http://testu.be/1ndmmMq.
2014 Jun 02, 08:00:02