Businessmen, scientists and right-wing thinktanks are joining forces to promote 'geo-engineering' ideas to cool the planet's climate, writes Clive Hamilton
In August 1883 the painter Edvard Munch witnessed an unusual blood-red sunset over Oslo. Shaken up by it, he wrote in his diary that he "felt a great, unending scream piercing through nature". The incident inspired him to create his most famous work, The Scream.
The sunset he saw that evening followed the eruption of Krakatoa off the coast of Java. The explosion, one of the most violent in recorded history, sent a massive plume of ash into the stratosphere, turning sunsets red around the globe. The gases emitted also caused the Earth to cool by more than one degree and disrupted weather patterns for several years.
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