Anti-gravity

Achieving true antigravity has been the "Holy Grail" of many propulsion researchers and experimenters since man first dreamed of flight. It's the aeronautics equivalent of the alchemist's quest to turn lead into gold. True antigravity would revolutionize air travel and space exploration. But is it possible? Or is it an impossibility that renders all such research fruitless and pointless? It's worth remembering that less than 100 years ago, space travel, not to mention going to the moon, were deemed impossible by much of the scientific community.