Pesticides Watch: What Are Pesticides And How Are They Used? By Kristofor Husted • May 5, 2017 Nathan Lawrence / for Harvest Public Media Two of the top questions I get as an agriculture reporter for Harvest Public Media are: What are pesticides, actually? How are they used on my food? From foodies to farmers, pesticides are a sensitive subject. Court Documents Raise Questions Of Roundup By Jeremy Bernfeld • Mar 15, 2017 File: Grant Gerlock / Harvest Public Media After court documents unsealed Tuesday raised questions about its research methods, chemical giant Monsanto says it did not ghostwrite a 2000 study on the safety of glyphosate, the active ingredient in its flagship pesticide Roundup.