For the first time in 40 years, the Environmental Protection Agency has taken emergency action to stop the use of a pesticide linked to serious health risks for fetuses. Tuesday’s emergency order applies to dimethyl tetrachloroterephthalate, also known as DCPA, a weedkiller used on crops such as broccoli, Brussels sprouts, cabbage and onions. When pregnant farmworkers and others are exposed to the pesticide, their babies can experience changes to fetal thyroid hormone levels, which are linked to low birth weight, impaired brain development, decreased IQ and impaired motor skills later in life. Mily Treviño Sauceda, executive director of Alianza Nacional de Campesinas, also known as the National Farmworkers Women’s Alliance, praised the agency’s action Tuesday, calling it “a great first step” to protect the reproductive health of farmworkers. Jeannie Economos, coordinator of the pesticide safety and environmental health program at the Farmworker Association of Florida, said the emergency order came too late for workers who have been exposed to DCPA for decades. Economos said she hopes that the EPA will ban more widely used, harmful pesticides and that the industry will move away from toxic agrochemicals.