This past week, the National Oceanic and Atmospheric Administration (NOAA) released a report linking climate change to some of the extreme weather events of 2011, like the devastating drought in Texas and record high temperatures in Britain.
None of this bodes well for the future, but there is a glimmer of hope. It turns out that U.S. carbon emissions are down nearly 8 percent since 2006.
This week, one of the biggest coal mining companies in Central Appalachia, Patriot Coal, filed for bankruptcy protection. Over the past three months, a wave of layoffs has hit coal country hard, and this past month, the share of all U.S. electricity generated from coal hit its lowest level since the 1940s. Our colleague Guy Raz visited Webster County in the middle of West Virginia to find out what's killing King Coal.