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From Hansen et al. 2007 [web page for the article "Climate change and trace gases"]: Paleoclimate data show that the Earth’s climate is remarkably sensitive to global forcings. Positive feedbacks predominate. This allows the entire planet to be whipsawed between climate states. One feedback, the “albedo flip” property of water substance, provides a powerful trigger mechanism. A . . . → Read More: The climate tipping point I’ve mentioned here several times that the one piece of analysis I trust the most regarding the date of peak oil is the “bottom-up” work by Chris Skrebowski. He’s recently updated his PowerPoint presentation that details his current summary of the oil situation, and I consider it a Must Read. You can find a summary of . . . → Read More: Chris Skrebowski update From Good News, Bad News in Great Lakes Health Report: Levels of many toxic chemicals in the Great Lakes are diminishing, yet at the same time new chemicals of concern are being detected, according to the latest joint report from the United States and Canada. The U.S. Environmental Protection Agency and Environment Canada released the 2007 State . . . → Read More: Great Lakes news From More drivers, including Utah’s governor, are switching to natural gas: Within the next couple of weeks, Utah Gov. Jon Huntsman Jr. will be driving his own own alternative-fuel vehicle – a 2005 Chevrolet Suburban he will be able to fill up for as little as 73 cents a gallon. Instead of gasoline or electricity, Huntsman’s automobile will . . . → Read More: CNG cars: penny wise and pound foolish |
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