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Immediately, Novim, a think tank based in Santa Barbara, California, released a written report that investigated the feasibility 1 of one's wilder sounding geoengineering schemes: pumping tiny particles in the upper atmosphere to block sunlight and trigger global cooling."It's the more serious technical report back to date," says David Keith with the University of Calgary in Alberta, Canada, who have been researching geoengineering for two decades.the best serious technical report to date. However political and ethical challenges facing an extremely worldwide intervention remain virtually unknown, same as its unintentional negative effects.Those potential adverse effects could include irrevocably altering precipitation patterns, argue Gabriele Hegerl, of this Grant Institute in Edinburgh, UK, and Susan Solomon, of the US National Oceanic and Atmospheric Administration in Boulder, Colorado, inside a paper published online on 6 August in Science1.They cite the instance of the 1991 eruption of Mount Pinatubo on Luzon island within the Philippines,Titleist MB 714 Irons, which injected sulphur particles high in the stratosphere,Callaway X Hot Irons, causing global precipitation and river flow dropping dramatically. "Geoengineering schemes optimized to cancel greenhouse warming can result in a lower global hydrological cycle and major regional changes," agrees Philip Duffy,Titleist 910 D3 Driver, a researcher at Climate Central in Palo Alto, California.Outlandish schemes Duffy and Keith both spoke in Albuquerque, New Mexico,Taylormade SLDR Fairway Wood, along at the annual conference belonging to the Ecological Society of America.