grasshopper effect
n.— «Every human in the world carries in his or her body traces of POPs, which circulate globally through a process known as the “grasshopper effect” and include such chemicals as dioxins, furans, DDT and PCBs, which are agents that that can kill people, damage the nervous and immune systems, cause cancer and reproductive disorders and interfere with normal infant and child development.» —“More chemicals to be added to UN-backed pact banning hazardous substances” UN News Centre Oct. 13, 2008. (source: Double-Tongued Dictionary)