This is on the lines of the work we recently noticed by the same writer (vol. i. Edin. Math. Soc. Proceedings). It is founded upon a table given in the Lady's and Gentleman's Diary for 1871. Nearly ...

On September 17, Antarctic sea ice likely reached its annual maximum extent of 17.81 million square kilometers (6.88 million square miles). The 2025 maximum is the third lowest in the 47-year ...