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Data PointsCharles David Keeling began measuring atmospheric carbon dioxide (CO2) in 1958 at the Mauna Loa observatory on the big island of Hawaii. This graph shows atmospheric carbon dioxide concentration in parts per million (ppm) by volume from 1958 to 2016. Worksheet also available in Spanish.
Data PointsTo test whether corals can become more resistant to bleaching, Dr. Steve Palumbi and colleagues performed a series of experiments in the U.S. National Park of American Samoa off of Ofu Island. Worksheets also available in Spanish.
Data PointsDr. Corina Tarnita and colleagues studied how a pattern of termite mounds across a dryland ecosystem enhances resilience against desertification.
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