The proposal comes about a month after the Senate voted to ratify a global treaty that calls for gradually reducing the use and production of the chemicals.
A proposed rule by the U.S. Environmental Protection Agency would require the chemical manufacturer Chemours to follow through on a recent voluntary commitment to eliminate emissions of a climate super-pollutant from its Louisville Works chemical plant.
A chemical plant in Louisville that makes a raw material for everything from Teflon to lubricants used on the International Space Station also appears to do more damage to the climate than all of this city's passenger vehicles.
In a rare defiance of the Trump administration, key Senate Republicans joined Democrats Thursday in agreeing to phase down a set of chemicals widely used in air conditioners and refrigeration that is warming the planet.
