Not too much for the global warming alarmists to write home about at the moment.
For the 29th of May, this is how 2021 compares to some recent years:
2021 - 12,205,000 Km^2
2020 - 11,718,000 Km^2
2019 - 11,758,000 Km^2
2018 - 11,773,000 Km^2
2017 - 12,214,000 Km^2
2016 - 11,334,000 Km^2
2015 -...