https://ift.tt/2wwdHAe California Had Its Own Climate Summit. Now What? Global Warming, Environment, Greenhouse Gas Emissions, Carbon Dioxide, United Nations Framework Convention on Climate Change, Hydrofluorocarbons, Methane There were plenty of announcements at a major climate conference in San Francisco, but not enough of what one researcher called the “exponential changes” still needed. BRAD PLUMER https://ift.tt/2xd8Ly3 September 15, 2018 at 05:30AM