The scientists at CERN want to learn why only one billionth of the matter in the world is anti-matter, and just how it really differs from its positive counterpart. The name of the unit studying the particles is interesting. ALPHA.
ALPHA [the Antihydrogen Laser Physics Apparatus], for example, will soon be upgraded with equipment that will allow it to drop antihydrogen atoms to see whether they interact with gravity differently than hydrogen atoms do.
Source: Scientists Will Soon Drop Antimatter to See How It Behaves in Gravity