The Green's Ultimate Hero

Via MisesInstitute:

Genghis Khan has been branded the greenest invader in history – after his murderous conquests killed so many people that huge swathes of cultivated land returned to forest.

The Mongol leader, who established a vast empire between the 13th and 14th centuries, helped remove nearly 700 million tons of carbon from the atmosphere, claims a new study.

The deaths of 40million people meant that large areas of cultivated land grew thick once again with trees, which absorb carbon dioxide from the atmosphere.