Tweeted By @randal_olson
Such wildly differing standards for air quality depending on the country. Air that’s considered Very Poor in the #EU and Unhealthy in the #USA is considered Good in #China. #dataviz
— Randy Olson (@randal_olson) January 25, 2021
Source: https://t.co/9ucRZuqiUs pic.twitter.com/WVrFhjO7Ce