New study reconciles a dispute about how fast global warming will happen | Dana Nuccitelli

Unfortunately, mainstream climate scientists are still right, and we're running out of time to avoid dangerous global warmingWe're currently on pace to double the carbon dioxide-equivalent (including other greenhouse gases) in the atmosphere by around mid-century.  Since the late 1800s scientists have been trying to answer the question, how much global warming will that cause?In 1979, top climate scientists led by Jule Charney published a report estimating that if we double the amount of carbon dioxide in the atmosphere from pre-industrial levels of 280 ppm to 560 ppm, temperatures will warm by 3 ? 1.5°C.  Four decades later, 'climate sensitivity' estimates remain virtually unchanged, but some climate contrarians have argued that the number is at the low end of that range, around 2°C or less. Continue reading...