Please join us for this presentation by Flagstaff Meteorologist Darren McCollum. He will explore why it is that human activities are changing the climate of our planet. Darren will present results from the National Climate Assessment including what changes are being observed in the southwest U.S./Arizona as well as predicted changes for the rest of this century. Darren McCollum has a Master of Science degree in Meteorology.  He is with the National Weather Service in Flagstaff, and has been the lead forecaster meteorologist since 1999. Open discussion with Q & A session.