This is a market on whether atmospheric CO2 will be above 418.00 parts per million (ppm) for the date of March 22, 2021 as measured by the National Oceanic and Atmospheric Administration’s Mauna Loa observatory (https://www.esrl.noaa.gov/gmd/ccgg/trends/monthly.html). This market will resolve to “Yes” if the daily average atmospheric CO2 is greater than 418.00 ppm for March 22, and “No” otherwise. This market will resolve when data is first available for the date of March 22, 2021. In the event of ambiguity in terms of the market outcome, the market will be resolved at the sole discretion of the Markets Integrity Committee (MIC).