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In New York lab, centuries-old corals hold clues to climate shifts

Some 20 miles north of New York City, a team of scientists is searching for clues about how the environment is changing by studying organisms not usually found in the woods around here: corals. In the labs of the Lamont-Doherty Earth Observatory, a research unit of Columbia University overlooking the Hudson River, the scientists led by Professor Braddock Linsley pore over feet-long coral cores they extracted from far-away reefs.