in 1972,the EPA issued a partial ban on the use of DDT

In 1969, under pressure from environmentalists,Congress passed the National Environmental Policy Act that required federal agencies to evaluate environmental impacts of their actions.To enforce the act,President Richard Nixon created the Environmental Protection Agency.And in 1972, the EPA issued a partial ban on the use of DDT.Long after her death, Rachel Carson continued to advocate for nature through the lingering impact of her writing.