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Browsing the "Katherine Hayhoe" Tag

410 PPM & Rising — CO2 Levels Reach Dangerous Levels

May 5th, 2018 | by Steve Hanley

High atop Mauna Loa on the island of Hawai'i, there is an observatory scientists use to study the cosmos. At 14,000 feet above sea level, it has a clearer view of the heavens than most places on Earth. (It is a neighbor of Kilauea, the volcano that erupted this week after a 6.9 magnitude earthquake struck the island.) The observatory is also an ideal place to monitor the Earth's atmosphere in a place with no local pollution from large cities. One of the instruments installed there measures the concentration of carbon dioxide in the air



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