In this talk, Dr. William Hooke, director of the US Weather Research Program Office at the National Oceanic and Atmospheric Administration, explores extreme events, which include geophysical phenomena, ecosystem events, and societal extreme events. He discusses how the research community and government programs approach this "cycle of disaster." This public lecture is taken from a scientific meeting on the topic, "Global Change and Natural Hazards," and is also part of the Walter Orr Roberts Public Lecture Series. This is a presentation of the Aspen Global Change Institute. Recorded on July 17, 1996 in Aspen, Colorado. Visit our website: www.agci.org.