Michael Mann is a professor in the College of Earth and Mineral Sciences, a climatologist, and the director of the Earth System Science Center at Penn State University. Michael is best known for his extensive background and research in the field of paleoclimatology. This work led to Michael's graph of temperature trends over the last thousand years, popularly coined as the "hockey stick graph" because of its resemblance to the sporting equipment. The graph has received acclaim and criticism since its publishing. He has received many awards and honors including, but not limited to, the Outstanding Scientific Paper Award by NOAA in 2002 and also was named one of the 50 Leading Visionaries in Science and Technology by Scientific American. Michael is also one of the founders of RealClimate.org, a highly acclaimed climate science website that was chosen in 2005 as one of the top 25 "Science and Technology" websites by Scientific American and as one of the top 15 "green" websites by Time Magazine in 2008. Michael's educational background includes an M.S. degree in Physics from Yale, and a Ph.D. in Geology & Geophysics from Yale.
"How the Media Frames Political Issues" by Scott London
In The Emergence of American Political Issues (1977) McCombs and Shaw state that the most important effect of the mass media is "its ability to mentally order and organize our world for us. In short, the mass media may not be successful in telling us what to think, but they are stunningly successful in telling us what to think about." The presidential observer Theodore White corroborates this conclusion in The Making of a President (1972):
The power of the press in America is a primordial one. It sets the agenda of public discussion; and this sweeping political power is unrestrained by any law. It determines what people will talk and think about - an authority that in other nations is reserved for tyrants, priests, parties and mandarins.
McCombs and Shaw also note that the media's tendency to structure voters' perceptions of political reality in effect constitutes a bias: "to a considerable degree the art of politics in a democracy is the art of determining which issue dimensions are of major interest to the public or can be made salient in order to win public support." http://www.scottlondon.com/reports/frames.html