Climate Central: El Nio has its fingers in a lot of pies this year: Not only is it helping to boost 2015 toward the warmest year on record, but it is also a major factor in blockbuster hurricane activity in the Pacific and is contributing to a major worldwide coral die-off.
By this time next year we'll probably be able to add another effect to that list: This El Nio is likely to tip us over into a world with carbon dioxide concentrations permanently above 400 parts per million.
"Will daily values at Mauna...