Not only can you discuss why ‘Particle physics is sexy!’ at the Battle of Ideas weekend, you can see why too. Thanks to the Science and Technology Facilities Council, the festival will exhibit a model of the ATLAS experiment - one of the four LHC experiments and in which the UK is playing a leading role. ATLAS is a particle physics experiment that will explore the fundamental nature of matter and the basic forces that shape our universe. Starting in mid-2008, the ATLAS detector will search for new discoveries in the head-on collisions of protons of extraordinarily high energy. ATLAS is one of the largest collaborative efforts ever attempted in the physical sciences. There are 1900 physicists (including 400 students) participating from more than 164 universities and laboratories in 35 countries.