Daniel Klem is the author of Solid Air, Invisible Killer: Saving Billions of Birds from Windows. From the editorial reviews by David Allen Sibley: “A thorough, important, and ultimately hopeful review of everything that is known about bird-window collisions, by the world’s leading expert in the field. This book is filled with useful information that should help all of us tackle this insidious problem.” Klem did the original research on bird-window collisions at Southern Illinois University in Carbondale beginning in 1974. He is currently Sarkis Acopian Professor of Ornithology and Conservation Biology at Muhlenberg College in Allentown, Pennsylvania, where, among other activities, he serves as technical consultant to glass manufacturers developing bird-safe sheet glass. Dan will provide an overview of his book as well as his sometimes surprising most recent work.