IPCC Report Finds Climate Change “Very Likely” Human Caused, to Continue for Centuries
The United Nations has just released its long-awaited report on climate change, warning global warming is almost certainly caused by humans. “Warming of the climate system is unequivocal, as is now evident from observations of increases in global average air and ocean temperatures, widespread melting of snow and ice, and rising global mean sea level,” the report said. What little debate still existed regarding human causality for climate change has been squashed as the United Nation's Intergovernmental Panel on Climate Change (IPCC) has issued their strongest statement yet that human activities are changing the climate. The report, Volume 1 of IPCC's Fourth Assessment, entitled Climate Change 2007: The Physical Science Basic [download official summary in pdf] states the cause of climate change is “very likely” man-made (>90% chance) and “would continue for centuries” (summary of main findings). It is quite interesting to note the changing levels of certainty of human causation of climate change by the IPCC over the last 20 years by this conservative grouping of world scientists. Though authoritative and exhaustively peer reviewed, if anything IPCC documents have and continue to error on the side of caution – partly the nature of science, the need to produce a consensus document, and lobbying by government bureaucrats protecting their interests. It is likely that scenarios of abrupt, runaway climate change [search] are given short thrift in such an environment. Climate Ark's news tracking and search feature provides full coverage of the lead up to, and the release of, the much anticipated report. Now on to climate change solutions [search] – 80% carbon reductions by 2050, massive renewable energy investments, banning coal, focus upon energy conservation and efficiency, and an emergency global summit to get all countries on board with equitable mandatory emissions caps.