Wednesday 12 February 2008 Speaker: Tom Roberts (Muons Inc. and Illinois Inst. of Tech.) Title: Prospects for an Energy-Frontier Muon Collider Abstract: High energy physics has always had great interest in extending the energy frontier with new accelerator facilities. The LHC appears to be close to the technical and economic limits for hadron colliders, and the ILC design effort shows that electron machines suffer from even greater difficulties in going to higher energy. Recent advances and inventions related to muon cooling have greatly improved the prospects for implementing a muon collider with useful luminosity at 1.5 TeV, 3 TeV, or even higher. This talk will summarize the new ideas, including a viewgraph-level sketch we are working to turn into a full conceptual design.