Data or Dogma? - U.S. Senate Investigates "Climate Change"

Climate Change investigated by US Senate; "Data or Dogma" U.S. Senate Investigates the Climate Change Alarm 8th Dec 2015 Chairman; Senator Ted Cruz. Eco-Loon Senator Markey is seen calling scientists "science deniers"! Full and unedited version. Get ready for a veritable barrage of "97%" straw men thrown up by Peters, Markey and others. Witnesses; Professor John Christy Distinguished Professor of Atmospheric Science and Director of the Earth System Science Center University of Alabama in Huntsville Professor Judith Curry Chair of the School of Earth and Atmospheric Sciences Georgia Institute of Technology Professor William Happer Cyrus Fogg Bracket Professor of Physics Princeton University Mr. Mark Steyn International Bestselling Author Dr. David Titley (Rear Admiral, USN (ret.)) Professor of Practice, Department of Meteorology, Pennsylvania State University Director, Center for Solutions to Weather and Climate Risk "Georgia Tech climate scientist Judith Curry testified she has become increasingly concerned the integrity of climate research is being compromised by the politicization of the science. This state of affairs is healthy for neither science nor sound public policy. Curry says there is considerable disagreement about the most consequential issues: whether the warming since the late 1800s has been dominated by human causes versus natural variability, how much the planet will warm in the twenty-first century, and whether warming is “dangerous.” She noted climate scientists making statements about uncertainty or degrees of doubt in the climate debate are labeled as “deniers” whose motives are assumed to be ideological or motivated by funding from the fossil fuel industry. Such ad hominem labeling, she said, results in enormous and unwarranted pressure – from politicians, federal funding agencies, universities, professional societies, and even other scientists – for climate scientists to conform to a so-called consensus dangerous anthropogenic warming is occurring. For William Happer, a physicist at Princeton and Columbia Universities, the key question is not whether carbon dioxide affects temperature, but rather how sensitive Earth’s temperature is to changes in carbon dioxide levels. Happer, who directed funding to the earliest climate models, testified there are credible estimates the temperature rise we might expect from a doubling of carbon dioxide from pre-industrial levels could be as low as 0.5° Celsius, just a sixth of the sensitivity assumed by most climate models. While the temperature impact of a doubling of carbon dioxide is likely to be small, Happer says the impact on agriculture could be tremendous. Pre-industrial levels of 280 parts per million (ppm) were barely above the 150 ppm threshold below which many plants die from carbon dioxide starvation. Thousands of peer-reviewed studies show almost all plants grow better (and land plants are more drought resistant) at atmospheric carbon dioxide levels two to three times h