Jess Zimmerman in Grist reports that researchers from the U.S. Geological Survey have detected the active ingredient of Roundup, a chemical called glyphosate, in waterways, air, and rain.
Roundup weed killer is showing up in air and water http://www.grist.org/list/2011-09-13-roundup-weed-killer-is-showing-up-in-air-and-water