2 febrero 2015
The first people to walk across the original Millennium Bridge may have been unnerved when it began to sway, but the bridge was actually doing them a favor: the swaying enabled them to walk the distance with 5 percent less effort, a new study shows.
http://feeds.sciencedaily.com/~r/sciencedaily/~3/V1pv7zgsx_U/150202141016.htm
