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Climate change scientist Ralph Keeling visits Bloomington next week to give a presentation at Indiana University’s School of Public and Environmental Affairs. Working with climate change and atmospheric science since the 1980′s, Keeling has been at the forefront of modern climate change research. WFHB correspondent Casey Kuhn spoke with Keeling about the upcoming talk, his current research, and his take on the future of climate change for today’s WFHB feature exclusive.