2021 was tied the sixth warmest year on NASA’s record, stretching more than a century. But, what is a temperature record? https://go.nasa.gov/3fos6Ch GISTEMP, NASA - National Aeronautics and Space Administration’s global temperature analysis, takes in millions of observations from instruments on weather stations, ships and ocean buoys, and Antarctic research stations, to determine how much warmer or cooler Earth is on average from year to year. Stretching back to 1880, NASA’s record shows a clea