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, assistant professor of earth and environmental sciences in the College of Arts Sciences, was quoted in The Associated Press story “.” Tuttle, an expert on hydroclimatology, explained how the Clean Air Act of 1970 and following EPA regulations helped to improve air pollution. “This has led to fewer health conditions such as cancer and asthma, for example, and saved millions of lives and trillions of dollars in health care costs,” Tuttle said. “That means healthier people, more productive fisheries and a healthier and more attractive environment for all of us to enjoy.”