@NASAViz@NASAGISS Catalytic converters became mandatory on all car models starting in 1975. They reduce smog but increase the amount of CO2 a car exhausts. Just my own personal theory.
Earth has warmed significantly from 1880 to 2021. 🌡️ 🌏
Red spirals in this visualization indicate years with warmer than average temperature.
Temperatures are based on the @NASAGISS GISTEMP v4 climate model. go.nasa.gov/3NsqW7n