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Politics : Formerly About Advanced Micro Devices -- Ignore unavailable to you. Want to Upgrade?

To: Brumar89 who wrote (997760)	1/31/2017 1:58:54 PM
From: Wharf Rat	Read Replies (2) \| Respond to of 1574888

"Back at that time, the doom predictors were hedging their bets ." ILSHIAPIMP. Back at that time, both Johnson and Nixon already had AGW as a concern. 50th anniversary few remember: LBJ's warning on carbon dioxide Feb. 2, 2015 Fifty years ago this month President Johnson voiced concern over invisible fossil fuel emissions in a special message to Congress. It was the first time a U.S. president warned the nation about our carbon habit. "I intend to institute discussions with auto industry officials…leading to an effective elimination or substantial reduction of pollution from liquid-fueled automobiles," On-target estimate Coal, oil, and natural gas burning would lift atmospheric carbon dioxide between 14 percent and 30 percent by the year 2000, the panel estimated. In fact, CO2 increased 15.5 percent by 2000, and is 25 percent higher today than in 1965. The science on carbon dioxide as known at the time, including forecasts of warming and sea level rise, was detailed in a chapter of a report on environmental pollution issued later that year by the president's Science Advisory Committee. Pioneering climate scientist Roger Revelle chaired the sub-committee that wrote the chapter in the November 1965 report. While citing a need for better calculations with "large computers," Revelle's panel delivered a forecast on growing atmospheric carbon that proved on-target. Coal, oil, and natural gas burning would lift atmospheric carbon dioxide between 14 percent and 30 percent by the year 2000, the panel estimated. In fact, CO2 increased 15.5 percent by 2000, and is 25 percent higher today than in 1965. "Man is unwittingly conducting a vast geophysical experiment," the report said, echoing language Revelle first had used in a 1957 scientific paper when he was at the University of California, San Diego, Scripps Institution of Oceanography. "Within a few generations, he is burning the fossil fuels that accumulated in the earth over the past 500 million years." Ken Caldeira, atmospheric scientist at the Carnegie Institution for Science's Department of Global Ecology, said the exchanges between scientists and the White House 50 years ago have significance for climate discussions today. "To the best of my knowledge, 1965 was the first time that a U.S. President was ever officially warned of environmental risks from the accumulation of fossil-fuel carbon dioxide in the atmosphere," Caldeira said in an email. "This year will mark a half-century of Presidential knowledge of the risks of climate change. I wish I could say that there has been a half-century of concerted efforts to reduce these risks. "The science of climate and the carbon-cycle that was reported to President Johnson in 1965 largely holds up today, demonstrating that climate science is a mature science," Caldeira added. "Climate scientists are still arguing about the details, but knowledgeable people have agreed about the fundamentals for a long time." dailyclimate.org Nixon administration debated global warming - politics \| NBC News