David Orr of Oberlin College speaks April 18 at Ohio State. He’s the author of Earth in Mind, The Nature of Design, and Down to the Wire: Confronting Climate Collapse, among others, and led the creation of Oberlin’s groundbreaking solar-powered, zero-discharge Adam Lewis Center for Environmental Studies. The three-part program, called “Beyond Business as Usual: Achieving and Teaching Sustainability,” features a lunchtime conversation, a forum on sustainable design and communities, and Ohio State’s second annual Sustainability Summit, where he’ll be the keynote speaker.