"The president of the United States delivered the commencement address at University of California-Irvine on June 14. During the speech, <a href='http://politicalticker.blogs.cnn.com/2014/06/14/climate-change-deniers-serious-threat-to-future-obama-says/'>he called lawmakers and pundits who deny manmade climate</a> change a ""fairly serious threat to everybody's future."""