Ernest H. Keeling

Ernest H. Keeling was an American scientist known for developing the Keeling Curve, a graph that measures the concentration of carbon dioxide (CO₂) in Earth's atmosphere. His work began in the 1950s at the Mauna Loa Observatory in Hawaii, where he systematically recorded CO₂ levels year-round. This data revealed a steady increase in atmospheric CO₂, highlighting human activities’ impact on climate change. The Keeling Curve remains a vital tool for understanding how greenhouse gas emissions affect global warming and environmental health.