"An international agreement to reduce hydrofluorocarbons could prevent 0.5 degrees of warming by the end of the century, officials say."

"In 1987, the Montreal Protocol set the ozone layer on the path to recovery. In 2016, it could take a bite out of greenhouse gas emissions.

Officials convened in Vienna this week to amend the Montreal Protocol, which phased out ozone-killing refrigerants called CFCs nearly three decades earlier. Now the delegation is nearing an international deal to reduce HFCs, says EPA administrator Gina McCarthy.

“We are seeing all countries coming into this meeting with an incredibly positive and collaborative energy level,'Ms. McCarthy said at a press conference on Thursday. 'There is no country that appears to be standing on the sidelines in this discussion.'"

Joseph Dussault reports for the Christian Science Monitor July 21, 2016. [2]