Jan 15, 2016

A call for civility and honest debate

In his final State of the Union address, President Barack Obama attempts to deflate the bubble of anger and fear animating U.S. politics, but it's probably a hopeless task.

Jan 14, 2016

Global mercury emissions down 30% as less coal is burned

Global emissions of mercury from man-made sources fell 30 percent from 1990 to 2010, in part from decreasing use of coal, the U.S. Geological Survey reported Wednesday. The greatest decline of the toxic pollutant was in Europe and North America, offsetting increases in Asia, ...