In 2019, the levels of anthropogenic SO2 emissions fell worldwide by 6%. In only the second time ever, SO2 emissions fell in all three of the countries most responsible for emitting it: China, India, and Russia.
Salyut 1 (DOS-1) was the first space station of any kind, launched into low Earth orbit by the Soviet Union on April 19, 1971. The Salyut program followed this with five more successful launches of seven more stations
The Emancipation Reform of 1861 in Russia was the first and most important of the liberal reforms enacted during the reign of Emperor Alexander II of Russia. he reform effectively abolished serfdom throughout the Russian Empire.