"Significant levels of the world's most-used herbicide have been detected in air and water samples from two U.S. farm states, government scientists said on Wednesday, in groundbreaking research on the active ingredient in Monsanto Co's Roundup."

"'It is out there in significant levels. It is out there consistently,' said Paul Capel, environmental chemist and head of the agricultural chemicals team at the U.S. Geological Survey Office, part of the U.S. Department of Interior.

Capel said more tests were needed to determine how harmful the chemical, glyphosate, might be to people and animals.

The study comes on the heels of several others released recently that raise concerns about the rise of resistant 'super weeds,' and other unintended consequences of Roundup on soil and animals."

Carey Gillam reports for Reuters September 1, 2011. [2]