Gene Likens, who first identified acidic rainwater in 1960s, said the Trump administration’s ‘rollbacks are alarming’

The US could be plunged back into an era of toxic acid rain, an environmental problem thought to have been solved decades ago, due to the Donald Trump administration’s rollback of pollution protections, the scientist who discovered the existence of acid rain in North America has warned.

A blitzkrieg launched by Trump’s Environmental Protection Agency (EPA) upon clean air and water regulations could revert the US to a time when cities were routinely shrouded in smog and even help usher back acid rain, according to Gene Likens, whose experiments helped identify acidic rainwater in the 1960s.