Reuters: When writer Anton Chekhov arrived on the Russian island of Sakhalin in 1890, he was overwhelmed by the harsh conditions at the Tsarist penal colony. It wasn’t just the floggings, forced prostitution and ill-treatment of children in the colony. It was the environment itself. “There is no climate on Sakhalin, just nasty weather,” Chekhov wrote. “And this Island is the foulest place in all of Russia.” More than a century on, Sakhalin’s prisoners have been replaced by oil and gas workers, most of…