Ban on hiking at Lake Mead as #climatechange bakes the west

'It's brutal out there': Weekend heat wave to bake western US - U.S. News: "At low-lying Lake Mead, which straddles the Arizona-Nevada border and is anticipating 120 degrees this weekend, rangers are positioned at trailheads to discourage visitors from hiking.
Earlier in June, a group of Boy Scouts hiking in the Colorado River canyon fell prey to soaring heat. Four teenagers and an adult had to be rescued, while a 69-year-old Scout leader died."

Dark ice causing melting feedback loop

guardian.co.uk Arctic sea ice, another key measure of global heating, is now 60 years ahead of worst-case projections from the last report by the Intergovernmental Panel on Climate Change in 2007."