UPDATE: congrats to the thousands of physicists at +CERN
where it was announced that, indeed, CERN experiments observe particle consistent with long-sought Higgs. This boson explains how mass works. Big day for science and especially physics.
UPDATE: the press conference has now concluded. It was highly technical: http://webcast.web.cern.ch/webcast/
In the comments below we've translated to language average humans can understand and pointing to interesting data sources.