Choosing the Best Tool: Mandates as Corrective Policy Instruments in Agriculture Duncan Voyles | November 16, 2018 | Economics, Environment, Young Scholars Agricultural production negatively impacts the environment. Nitrate and pesticide runoff contaminate drinking water. Animal waste causes bacterial contamination. Odor from livestock operations affects nearby residential areas. The list goes on. Despite these negative... Read More Duncan Voyles Duncan Voyles was a 2017-2018 Young Scholar for the Initiative on Faith and Public Life and graduated from Hillsdale College where he majored in applied mathematics and economics.