Slick Propaganda
Gore?s movie substitutes vivid images of the alleged effects of global warming for an accurate account of the scientific debate. We see glaciers calving into the sea, giant storms sweeping through resort areas, burning deserts, and even a cartoon polar bear swimming aimlessly, searching for a place to rest.
Problem: All of the events pictured in this movie have been occurring since before human activities could possibly have caused them. Glaciers have calved into seas for millions of years, storms obviously predate modern civilization and our emissions, and real-life polar bears know better than to head out into open water during the Arctic summer. At any given time in Earth?s history, some glaciers have been expanding while others have been shrinking. (We have accurate information on only 42 of the approximately 160,000 glaciers presently in existence.)
Early in the movie, Gore shows us images of the disappearing snow cap atop Mount Kilimanjaro and blames the loss on global warming. Wrong. Scientists know temperatures at the top of Kilimanjaro have been falling, not rising, and the disappearing snow is due to changes in land use at the bottom of the mountain, causing drier air to rise up the mountain?s side.
Later we see ice melting in the Arctic, Greenland, and the Antarctic. More evidence of global warming? Not necessarily. Scientists say temperatures in the Arctic were higher during the 1930s and the current melting is probably part of a natural cycle caused by ocean currents, not greenhouse gases. And only small parts of Greenland and the Antarctic are melting: Snow and ice are accumulating as rapidly in other parts, for a net loss of around zero.
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So what are we to make of (in alphabetical order) Dr. Tim Ball at the University of Winnipeg, Dr. Robert Balling at Arizona State University, Dr. Bob Carter at James Cook University in Australia, Dr. Randall Cerveny at Arizona State University, Dr. John Christy at the University of Alabama, Dr. Robert Davis at the University of Virginia, Dr. Christopher Essex at the University of Western Ontario, Dr. Oliver Frauenfeld at the University of Colorado, Dr. Wibjörn Karlèn at Stockholm University, and Dr. Christopher Landsea at the National Oceanic and Atmospheric Administration (NOAA)?
And what about Dr. David Legates at the University of Delaware, Dr. Henry Linden at IIT, Dr. Richard Lindzen at MIT, Dr. Ross McKitrick at the University of Guelph, Dr. Patrick Michaels at the University of Virginia, Dr. Dick Morgan at the University of Exeter, Dr. Tim Peterson at Carleton University, Dr. Roger Pielke Jr. at the University of Colorado, Dr. Eric Posmentier at Dartmouth College, Dr. Willie Soon at Harvard-Smithsonian Center for Astrophysics, Dr. Roy Spencer at the University of Alabama, and Dr. Boris Winterhalter at the University of Helsinki? All are respected authorities on climatology, working at respected universities, who appear regularly in peer-reviewed science journals ... and they all dispute Gore?s alarmist claims.
So who are you going to believe, politician Al Gore or real scientists?