Cassman's main area of focus is global food security and the gap between potential and actual yields. However, he has studied biofuels as well. In 2007, he co-authored a paper titled "Food and Fuel for all: Realistic or Foolish" about biofuels. In 2009, he was a co-author of a study that exempted life cycle energy efficiency and greenhouse gas emissions of corn ethanol.
Perrin is interested in agricultural productivity -- how to measure it, how it happens and who benefits from it. He also is interested in bio fuels and their impact on agriculture, the climate and the environment. He also studies the Great Plains' potential to feed a burgeoning world population in a sustainable manner.
F. John Hay, an extension educator in biological systems engineering, teaches both adults and youth about biofuels such as ethanol and biodiesel, bioenergy crops and small renewable energy systems. He is familiar with small wind turbines, solar PV and the economics of those systems. Hay also has developed curriculum for youth that uses renewable energy to teach engineerings and physics.