Climate Change

The Environmental Protection Agency (EPA) today announced a new "one-hour standard" aimed at limiting Americans' short-term exposure to nitrogen dioxide (NO2), a pollutant created by cars, power plants, and other industrial sources.

Just before New Year's, the American Association of State Highway and Transportation Officials (AASHTO), the Washington voice for state DOTs that's often dubbed the "road lobby," counted down 10 hot topics for 2010.

Obama administration officials "need to align together" to work on reducing the nation's total vehicle miles traveled -- work that should go beyond a pending congressional climate bill -- the Environmental Protection Agency's (EPA) air-quality chief said today.

The potential for a cap-and-trade climate bill to set aside significant amounts of money for reforming local land use and transportation planning is often touted by Democrats, environmental groups, and this particular Streetsblogger.

While many in Washington spent their holiday breaks wondering if Senate Democratic opposition would deal a major blow to progress on a climate change bill, 11 northeastern governors were agreeing on a deal that suggests otherwise.

As the Copenhagen climate talks reach a turning point, congressional negotiations over emissions cuts are taking a back seat to global debate. But some undeniably good news on the domestic front came late yesterday from the nonpartisan Congressional Budget Office (CBO).

At a panel discussion yesterday at the Copenhagen climate summit, American policymakers and transit experts delivered a clear message: Walkable urban development must be part of any effective plan to reduce global greenhouse gas emissions. Thanks to the magic of live webcasts, I can relay a few highlights for Streetsblog readers.

Acting under a Supreme Court mandate, the Environmental Protection Agency (EPA) ruled today that greenhouse gas emissions endanger public health and contribute to the harmful environmental effects of climate change, paving the way for pollution regulations under the Clean Air Act.