Today a 9th Circuit court in San Francisco hears arguments on the legality of California's, first in the nation, low carbon regulation for transport fuel. The case may determine whether California becomes the U.S. leader in climate litigation.

Shipping across the ice-free Arctic appears closer than ever. The new route will save fuel, but bring emissions and soot directly to the Arctic — possibly accelerating the ice melt.

A hint of optimism about climate change.

At an energy conference today, European Union members will be talking about how to shore up carbon markets as prices for carbon allowances fall.

The new regulations for power plants will reinforce market realities.

The European Union wants airlines to reduce emissions or pay for permits allowing them to pollute. U.S. opponents say the permit fees would be better spent on new, more efficient aircraft.

The annual U.N. Climate Summit starts today in Durban, South Africa. Unfortunately, these summits don't seem have a great track-record for enacting change.

We've had Dow Chemical in the Greenwash Brigade's crosshairs in the past, so climate change skeptics chew on this: Greenpeace AND Dow Chemical are…