NEW YORK & CHANGSHA, China--(BUSINESS WIRE)--Natural water technology systems have enabled Alcoa (NYSE:AA) to decrease water usage and to return more clean water to the communities in which the company operates, said Rajat Ghosh, Ph.D., a senior project leader in Alcoa’s Environmental Science and Sustainable Technology Division. Speaking at the China America National Frontiers of Engineering (CAFOE) symposium held at Changsha University, Hunan Province, Ghosh explained Alcoa’s water
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