How firm?
Some links for non-scientists like myself: A commenter links here. CERN article here and background article here. One page explanation by different physicists about what it is and why they’re looking for it.
Related On This Site: From Scientific Blogging: ‘Einstein On Steroids: Dirac, The Higgs, And Speeding Neutrinos’
Repost-From Scientific Blogging: The Humanities Are In Crisis-Science Is Not…A Short Post On Red Sprites And Blue Jets: Cosmic Origins Of Lightning?