In climate news, nearly 200 nations have backed a legally binding deal to cut back on greenhouse gases used in refrigerators and air conditioners. Hydrofluorocarbon, or HFC, gas can be 10,000 times more more potent than carbon dioxide in trapping heat in the atmosphere. Gina McCarthy, the head of the U.S. Environmental Protection Agency, praised the deal.

Gina McCarthy: “If you look at it, we are going to achieve somewhere in the order of 80 to 90 percent of the emission reductions from these chemicals. It is staggering what this will achieve. We’re talking about an amount that’s comparable to thousands of coal-fired power plant emissions. It’s amazing.”