Bill McKibben, one of America's best known environmentalists, will describe the science of climate change and talk about the inspiring global movement that he's led to help change the world's understanding of its peril, and spur the reforms necessary to get the plant back to safety. The lecture will be held on Wednesday, Oct. 10, at 7:30 p.m. in SU's Hendricks Chapel and is free and open to the public. For more information, visit lectures.syr.edu.