From Alaska's Aleutian Islands to southern California, impacts since May have ranged from record-high concentrations of neurotoxins, to shellfish harvesting bans, to reports of sick and dead ocean life.
Few things are more important to California’s water supply than the water content of the mountain snowpack at the start of the state’s warm season. In the latest round of our Climate Challenge game, experts and participants predicted the water content of the Sierra Nevada snowpack on May 1, 2015. The answer was disturbingly low.
Arctic sea ice extent reached 5.61 million square miles on February 25, and then began to retreat. Unless a late growth spurt takes place, it will be the smallest winter maximum in the satellite record.