"Atrazine, the second most widely used weedkiller in the country, is showing up in some streams and rivers at levels high enough to potentially harm amphibians, fish and aquatic ecosystems, according to the findings of an extensive Environmental Protection Agency database that has not been made public," reports Juliet Eilperin in the Washington Post.

The data were compiled by the chemical's manufacturer, Syngenta Crop Protection, as part of its application for renewed EPA approval of the herbicide, but not made public by EPA.

• "High Weedkiller Levels Found in River Checks," [2] Washington Post, Dec. 9, 2007, Juliet Eilperin.