Oil and gas companies injected hundreds of millions of gallons of hazardous or carcinogenic chemicals into wells in more than 13 states from 2005 to 2009, according to an investigation by Congressional Democrats.

T. Boone Pickens has somehow managed to sell President Obama and an astonishing number of Congress members on the myth that nat-gas is a homegrown wonder fuel.

For years, a chemical plant in the Chinese village of Qiugang had polluted the river, poisoned the drinking water, and fouled the air — until residents decided to take a stand. The Warriors of Qiugang, a Yale Environment 360 video co-produced by Ruby Yang and Thomas Lennon, tells the story of the villagers’ determined efforts to stop the pollution.