The Large Hadron Collider in Switzerland has been restarted after a two year rest for some serious renovations. ( http://www.theglobeandmail.com/technolo ... e23799528/ ).
"After a rest" indeed .... the last problem it solved was the proof of the existence of the fundamental particle called the Higgs Boson, an ongoing search for a number of decades.

The latest 'rest' has apparently upped the creatable energy level by twice that before the tinkering, which conceivably puts it at the level of energy which existed just fractions of a second after the big bang.
Things to look for: possiblly a solid confirmation ~ or at least understanding ~ of String Theory (or the opposite ... a discarding of the theory all together). A discovery of even smaller and more fundamental particles. Hopefully a greater understanding of Dark Matter.

I love this stuff and I enjoy very much reading about it, although I do so in layman's writings .... a physicists written word makes me crazy.