Fermilab's Tevatron, once the world's most powerful "atom smasher," may have discovered the Higgs Boson. It has proven so far to be an elusive elementary particle. It's potential discovery may cause the rewriting of the standard model of physics.
Read the article in the NY Times here: http://www.nytimes.com/2011/04/06/science/06particle.html?_r=1&ref=science
Enjoy.