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November 18, 2009     The Julian News
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November 18, 2009
 

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12 The Julian News Alternative Power DPLU has issued a permit for a test/ model installation in Jacumba! (760) 767-56t x H4ndpower Borrego Springs Propane Service k Real Country Hardware 8to~ Why spin ~ur wheels trying to find items elsewhere, Our customers say we stock almost everything they've ever tried to find, Instead of last resort, TRY US FIRST! We don't 9or it, we can 9et it. Come see why we're'HILLTOP SUPPLY." 619 478 161. 619 445-2188 87506 Old Hwy. 80, Ozmta7 53 8 ree P.O. Box 159. Ramona, CA 92065 (760) 789-0240 OPEN SUNDAYS! Questions & Answers About Our Environment Dear EarthTalk: It has been said that global warming will bring a new ice age. Is this true or only fiction? -- Nitisha Jain, DelhL India While no one can be sure what and how severe the effects of global warming will be, it is entirely possible that one outcome of our profligate use of fossil fuels could be an ice age. The theory goes that a warming- induced influx of cold, fresh water into the North Atlantic from melting polar ice caps and glaciers could shut down the Gulf Stream, an underwater channel of warm ocean water that winds its way north from the Caribbean and moderates temperatures in the northeastern U.S. and Western Europe. The result, some scientists speculate, would be a return to ice age conditions. In the extreme, glaciers and freezing temperatures would render large swaths of the civilized world uninhabitable and would kill off untold numbers of species unable to move or adapt. A less dire version would still cause bitterly cold winters, droughts, worldwide desertification and crop failures, and trigger resource wars across the globe. Of course, over the history of geological time the planet has endured vast shifts in temperature and many ice ages and subsequent warm-ups. The last major ice age peaked about 20,000 years ago, when extensive ice sheets covered large parts of what we now call North America, Europe and Asia. Many climate scientists believe the planet oscillates between warmer and colder periods without human intervention due to various factors related to its orbital path and also variations in heat output from the Sun on a millennial scale--and that we are naturally heading toward another ice age, regardless of greenhouse gas emissions, over the next several dozen millennia. But others believe those very emissions might just save us from the freezing throes of another ice age. In a study published in the September 4, 2009 issue of the Science magazine, researchers report that human-induced climate change is quite possibly fending off what had been presumed to be an inevitable descent into a new ice age based on data collected across various Arctic regions in recent years. The study found that after a slow cooling of less than half a degree Fahrenheit per millennium as a result of a cyclical change in the orientation of the North Pole and the Sun, the Arctic warmed by some 2.2 degrees just since 1900, with the decade from 1998 to 2008 the warmest in 2,000 years. Without human intervention, researchers would expect summer temperatures in the Arctic to cool for another 4,000 years or so as the North Pole gets further from the Sun, but in fact, researchers believe, global warming is reversing this trend. "The slow cooling trend is trivial compared to the warming that's been happening and that's in the pipeline," reports the study's lead author Darrell S. Kaufman of the University of Arizona. Of course, only time will tell whether our relatively short- November 18. 2009 One possible outcome of our profligate use of fossil fuels could be another Ice Age. Warming-induced cold water spilling into the North Atlantic from melting ice caps and glaciers could shut down the Gulf Stream, an underwater channel of warm ocean water that winds its way north from the Caribbean and moderates temperatures in the northeastern U.S. and Western Europe. In this image the Gulf Stream (shown in white) can be seen fowing to the northeast off of the United State's eastern seaboard. photo-Donna Thomas/MODIS Ocean Group term flood of pollutants will have a pronounced long-term effect on the planet's geological-scale warming/cooling dynamic. In the meantime, most responsible individuals and governments are working to lower their carbon footprints to try to take man back out of the climate equation once and for all. Hopefully our grandkids' grandkids will be around to thank us. CONTACT: Science Magazine, www.sciencemag.org/cgi/ content/short/325/5945/1236. SEND YOUR ENVIRONMENTAL QUESTIONS TO: EarthTalk, P.O. Box 5098, Westport, CT 06881 earthtalk@emagazine.com Read past columns at: www.emagazine.com/ earthtalk/archives.php. EarthTalk is now a book! Details and orderinformation at: www.emagazine.com/ earthtalkbook. --qIII/iIOILtAII -'[O]LvA!"- --O] -- el, I,] :t;]Ltltdl I I mlolt#i,,"- -- :1 I1:11Oll/I [liV:l u.'! :1 tLVJ[ I -- = 1 |,__1 t, leltd[o]o] eli I I[o]o] ,11 [e-- GRADING PAINTING REMODELING SEPTIC SYSTEMS TILE WORK WATER SYSTEMS WELL DRILLING Contractor Contract'or Electrical Drilling Painting Septic Systems Dump TruckNVater Trucl Trenching Demo/Break~ Underground ~ Road Wor Pumps~Well Contractor Lic. 702741 Submersible Pumps Booster Pumps Storage Tanks Ozone Water Treatment Plumbing Lic.# 911380 Cruz Ph g 18 years plumbing experience (760) 765-2982 Water Treatment problems, big or small. 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