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Dennis E. Hayes, Mapper of the World’s Ocean Beds
Dennis E. Hayes, a marine geophysicist who advanced mapping of the world’s ocean floors, died at his home in New York City on Aug. 6. He was 76.

You Asked invites you to share your most pressing questions about climate, science, and sustainability. Lamont-Doherty Earth Observatory and Columbia Climate School experts will respond with clear, evidence-based answers. Pose your questions and story ideas!
