{"entry":{"title":"Take U.N. Climate Science With a Grain of Salt","date":"Sat, 28 Sep 2013 04:00:00 +0000","author":"Ronald Bailey, Reason","description":"
Today, the United Nations' Intergovernmental Panel on Climate Change (IPCC) published a new\u00a0Summary for Policymakers<\/a>\u00a0(SPM), cataloguing what is known about the physical basis for man-made global warming. The IPCC states that there is now 95 percent certainty that more than half of the warming over the past 60 years can be attributed to human activity. Since 1951, global average temperature has increased by approximately 0.6\u00b0C to 0.7\u00b0C.\u00a0The dominant cause for increasing average global temperatures, the panel finds, is the rising level of carbon dioxide in the atmosphere emitted by burning fossil fuels. In addition, \"Each of the last three decades has been successively warmer at the Earth's surface than any preceding decade since 1850. In the Northern Hemisphere, 1983\u20132012 was\u00a0likely\u00a0the warmest 30-year period of the last 1400 years.\"<\/p>","original_link":"http:\/\/reason.com\/archives\/2013\/09\/27\/humans-are-the-certain-cause-of-climate"}}