Scientists revise global warming scenarios, retire RCP8.5 (opens in new tab)

Scientists preparing the next series of major United Nations climate assessments are dropping the old best- and worst-case global warming scenarios, including the high-emissions pathway known as RCP8.5, which climate-impact researchers had used for about 15 years. The Globe and Mail reported that the most catastrophic projections have been dialed back and that the international warming goal set in 2015 is no longer considered achievable. The revisions reflect changes in energy and emissions t...