Even with the Higgs boson confirmed, there's still plenty of research left for Hawking and his colleagues. Scientists' understanding of how gravity works doesn't fit well into the Standard Model, which explains how particles act at the sub-atomic level, at which scale gravity is negligible. Hawking said he hopes CERN will turn next to gathering data to prove or disprove the M-theory, which unites the Standard Model and scientists' understanding of gravity. No experimental evidence for the M-theory exists. Check out The Guardian for more descriptions of the theory, as well as another, yet unresolved bet Hawking made.