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Neil Pederson’s introduction to tree rings came from a “sweet and kindly” college instructor, who nevertheless was “one of the most boring professors I’d ever experienced,” Pederson said. “I swore tree rings off then and there.” But they kept coming…

Cooling the Earth by injecting sun-blocking particles into the stratosphere could be “remarkably inexpensive”, according to the most detailed engineering analysis to date. The fear of a rogue nation or military force unilaterally taking control of the global climate is…

Green certified buildings are delivering billions of dollars in health, climate and energy-saving benefits, according to a major new study from Harvard University. Engineering giant United Technologies Corporation (UTC) commissioned a team of researchers at the university to study how…