When I was growing up in Florida, we were often overburdened by the bounty of citrus growing in neighbors' and family members' yards. But it's an entirely different story now. When I go home to visit, there's talk of the orange and grapefruit trees producing tiny bitter fruits, and eventually dying. The problem goes beyond my own selfish citrus consumption, though. It's been estimated that the state of Florida has lost about $3.63 billion in revenue from orange juice between 2006 and 2012. The culprit? A tiny insect known as the Asian citrus psyllid, and more specifically, the bacteria it spreads, known as Candidatus Liberibacter asiaticus.