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This story was originally published by the Guardian and is shared here as part of the Climate Desk collaboration.

California is banning a widely used pesticide that has been linked to brain damage in children, a major victory for public health advocates who have long fought to outlaw the toxic chemical in the agricultural industry.

The state ban on chlorpyrifos, a pesticide used on almonds, citrus, cotton, grapes, walnuts and other crops, follows years of research finding the chemical causes serious health effects in children, including impaired brain and neurological development. The US Environmental Protection Agency (EPA) had moved to ban the chemical under Barack Obama, but the Trump administration reversed that effort, rejecting the scientific conclusions of its own government experts.

“A lot of people live and work and go to school right next to fields that are being sprayed with chlorpyrifos…It’s an issue of environmental health and justice.”

“Countless people have suffered as a result of this chemical,” the California EPA secretary, Jared Blumenfeld, said in an interview on Wednesday. “A lot of people live and work and go to school right next to fields that are being sprayed with chlorpyrifos…It’s an issue of environmental health and justice.”

The move in California, home to a vast agricultural sector responsible for growing a majority of the nation’s fruits and nuts, is the latest example of the state resisting Trump’s conservative agenda and policies. Environmental activists, however, have been pushing to stop chlorpyrifos use in the state for years in the wake of overwhelming evidence of harms caused by exposure.

“This is a very important and pivotal moment,” said Angel Garcia, the chair of the Coalition Advocating for Pesticide Safety, who has worked with families affected by chlorpyrifos. “It sends the message to communities that they are starting to be heard…People will now have a safer future.”