As the Porter Hypothesis — that well-structured environmental regulations can help businesses — marks two decades, resistance to the concept remains strong.
A groundbreaking study of pristine national parks in the Western United States found an amazing array of airborne pollutants, including some chemicals banned for decades.
Terry Hazen finds, studies and then uses microbes to clean up pollution deep underground, to refine oil before it is pumped and to produce the next generation of green fuels. He catches alligators sometimes, too. ...
A cargo ship that generates some of its power from the sun may shine a light on ways to reduce transportation's dirty little secret — the world's oil-powered fleets are hideous global warmers.