One of the most comprehensive scientific reviews ever assembled confirms what most people already acknowledge about climate change: it is happening, human activity is causing it, and we have a rapidly closing window of time to prevent unprecedented, potentially catastrophic climatic shifts. What the Intergovernmental Panel of Climate Change report summary released this morning in Stockholm adds is near-certainty that warming is man-made, and stronger language to describe the changes underway. Global warming is “unequivocal,” and its effects “unprecedented over decades to millennia,” states the IPCC, which considered the research of some 600 scientists from thirty-two countries, and concluded that there are more greenhouse gases in the atmosphere now than at any point in at least 800,000 years. “It is extremely likely that human influence has been the dominant cause of the observed warming since the mid-20th century,” states the report. Fossil fuel emissions and to a lesser extent land-use changes account for a 40 percent increase in carbon dioxide concentrations since pre-industrial times. - See more at: thenation/blog/176394/scientific-consensus-wont-change-politics-climate-change#sthash.4GvITDq2.dpuf
Posted on: Sat, 28 Sep 2013 06:49:59 +0000
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