Scientists: Global Warming Likely to Surpass 2°C Target

It took a long time for nations to set a speed limit on the road to a warming world.

  But for the past four years, even though negotiators have never arrived at a plan for avoiding dangerous climate change, they have agreed on a goal: limiting the increase in the Earth's global average surface temperature to 2°C (3.6°F) above the preindustrial level.   Now, two Union of Concerned Scientists (UCS) climate scientists and two colleagues argue that policymakers need to acknowledge that the world is already on track for warming beyond 2°C. (See related “Quiz: What You Don't Know About Climate Change Science.”)   Continue reading on The Great Energy Challenge.