For much of the last 20 years, South American governments have received complaints from rural communities about the environmental and health effects of aerially sprayed glyphosate, which is the world’s most widely applied herbicide. In Colombia, glyphosate is used to destroy coca, from which cocaine is made. In Argentina, Brazil, Paraguay and Uruguay, it is employed as a weed killer on plantations of soybeans that have been genetically modified to tolerate it. In all of these countries, rural dwellers say the chemical has made them ill and killed off their food crops—and assert their entreaties too often have fallen on deaf ears. But this state of affairs may be starting to change. On March 20, researchers for the United Nations World Health Organization (WHO... [Log in to read more]