6 abril 2015
Yesterday, the world’s most powerful particle accelerator began its second act. After two years of upgrades and repairs, proton beams once again circulated around the Large Hadron Collider, located at the CERN laboratory near Geneva, Switzerland.
http://feeds.sciencedaily.com/~r/sciencedaily/~3/wgCegsep9ms/150406083258.htm
