Steven's presentation consists of a 25 minute slide presentation with many of the best photos from my collection of more than 4,000, along with a running commentary followed by a short Q&A session. For more information about Steven: www.stevenburchik.com

Dr. Andrew Gunther will review the basic physical principles and observations that have led every scientific academy in the world to conclude that human emissions of greenhouse gasses are altering the climate. He will discuss what the expected significant climatic changes mean for the country in general and the Bay Area in particular. More information about Dr. Gunther is available http://andrewgunther.com/.