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4 Key Moments That Incited Americans to Take Action on Climate Change

4 Key Moments That Incited Americans to Take Action on Climate Change

The Keeling Curve tracks changes in the concentration of CO2 in the Earth's atmosphere using data from a research station on Mauna Loa in Hawaii.

Scientists first 200 years ago, the first scientists to study climate change began., but most of the events and discoveries that have driven conversation about the planet’s temperature came in more recent years. Here are some key moments which brought attention to these issues:

1. Early Evidence

The Keeling Curve tracks changes in the concentration of CO2 in the Earth's atmosphere using data from a research station on Mauna Loa in Hawaii.

The Keeling Curve tracks changes to the concentration of CO2 within the Earth’s atmosphere, using data from a Mauna Loa research station in Hawaii.

In 1958, Charles David Keeling began plotting levels of CO2 in the atmosphere from atop Mauna Loa in Hawaii, producing the famous Keeling CurveThis site is updated daily. (When he started, the atmospheric levels of CO2 were 313 parts per Million (ppm); they are now at a much lower level. around 420 ppm.) 



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