Citrus Greening Diseases Threatens Florida's Orange Industry

FORT PIERCE, FL - MAY 13: Oranges are seen in a tree as the citrus industry tries to find a cure for the disease "citrus greening" that is caused by the Asian citrus psyllid, an insect, that carries the bacterium, "citrus greening" or huanglongbing, from tree to tree on May 13, 2013 in Fort Pierce, Florida. There is no known cure for the disease that forms when the insect deposits the bacterium on citrus trees causing the leaves on the tree to turn yellow the roots to decay and bitter fruits fall off the dying branches prematurely. Steps continue to be taken to try and combat the disease but none have stopped the attack on the citrus business as it spreads from Florida to other citrus producing states. (Photo by Joe Raedle/Getty Images)