Obama's Alaska visit highlights climate already changed
Each particular battle is but one part of the longer struggle to transform our energy economy, our economy as a whole, how things are produced, packaged, and distributed.
Study: Cutting carbon dioxide saves 3,500 U.S. lives a year
The study from Harvard and Syracuse University calculates the decline in heart attacks and lung disease when soot and smog are reduced.
Climate agreement with China kills major rightwing argument against carbon curbs
The new agreement removes one of the right wing's major arguments against action to curb global warming.
The real scientific uncertainties about climate change
The real debates are about whether climate change will be catastrophic within years or within decades, and about whether or not we have already passed crucial environmental tipping points.
Atmosphere's carbon dioxide breaches 400
Many climate scientists, such as James Hansen of NASA's Goddard Institute, believe that any sustained period of time with higher than 350 ppm threatens catastrophic global warming.
