World Dec 15

Longest UN climate talks end with no deal on carbon markets

Marathon international climate talks ended Sunday with major polluters resisting calls to ramp up efforts to keep global warming at bay and negotiators postponing the regulation of global carbon markets until next year.

May 31

Obama to announce regulation effort to curtail carbon

The new pollution rule the Obama administration announces Monday will be a cornerstone of President Barack Obama's environmental legacy and arguably the most significant U.S. environmental regulation in decades. But it's not one the White House wanted.