• Pesticides in Mississippi air and rain: A comparison between 1995 and 2007. "Glyphosate and its degradation product, AMPA, were detected in ≥75% of air and rain samples in 2007, but were not measured in 1995." https://www.ncbi.nlm.nih.gov/pubmed/24549493 4 comments 22/2/2014 science