"Scientists [now] know more about the relationship between genes and environment in the creation of disease. Even as researchers are linking individual genes to specific diseases, they are also discovering that particular substances in the environment can 'turn off' or 'turn on' these genes. The description often used by scientists is that 'genetics loads the gun, but the environment pulls the trigger.'"
Joan Lowy, "Canaries in the Mine:
Evidence of Chemical Effects on Kids
Mounts," Scripps Howard News
Service, December 2003