Podcast: Play in new window | Download Hours after pictures like the one at right began appearing on the Internet, showing the scope of the Exxon pipeline oil spill in the town of Mayflower, Arkansas, the Federal Aviation Administration clamped a no-fly zone over the town. The FAA order is to be in effect “until [...]


![It has become a fad to argue about the effect of industrial smokestacks on changing climate. But that is far from all they do, as the USGS has just reminded us. (Photo by Eric Schmuttenmaer [akeg] /Flickr)](http://www.dailyimpact.net/wp-content/uploads/2012/02/air-pollution.jpg)






