The Rocky Mountain Arsenal was once called the most polluted land in America, but today it’s one of the country’s most visited urban wildlife refuges. Join OLLI Facilitator John Lanning, a former U.S. Army chemical corps officer and retired chemistry professor, for a discussion of the history of the Rocky Mountain Arsenal as a military chemical arsenal, agricultural pesticide and herbicide producer, and example of Superfund mitigation of toxic waste. We’ll also cover hiking, biking, and touring options available at the Wildlife Refuge. ADULTS. REGISTRATION REQUIRED. Registration will be shared with Osher Lifelong Learning Institute at the University of Denver.

Not long ago the term “bird-brain” was meant as an insult. Today, scientists are discovering the marvelous cognitive complexity of a variety of different birds. Despite their tiny brains (does size matter?), many bird species exhibit intricate problem-solving skills, astonishing memories, and unique methods of communicating. Join OLLI Facilitator Peggy Winn for a fascinating discussion that will explain and demonstrate via short videos why the term “bird-brain” should indeed be a compliment. ADULTS. REGISTRATION REQUIRED. Registration will be shared with Osher Lifelong Learning Institute at the University of Denver.