Since its existence was first theorized in the 1960s, scientists have been searching for the mysterious Higgs boson. This subatomic particle is believed to be responsible for mass, and would help explain why objects feel inertia and have momentum. Unfortunately, physicists were unable to find the particle in the 1990s using the world’s largest atom smashers. A new estimate for the particle’s mass from Berkeley Lab explains why it might have eluded discovery. Fortunately, CERN’s new Large Hadron Collider, due to start up in 2007 should have the ability to find the Higgs particle at a heavier mass.