Wes Jackson of The Land Institute “has been pursuing the science and tweaking the strategy” of a sustainable agriculture movement for more than three decades. “Instead of a brittle industrial agriculture dependent on fossil fuels,” Jackson’s research team “is working to build a resilient agriculture modeled on natural ecosystems.” At the same time, according to Robert Jensen, Jackson also recognizes that science alone won’t solve the problem; serious changes are necessary in economic, political, and social systems.