I will begin with the lectures given in 1962 by Harry Wexler, head of research at the weather bureau, "On the Possibilities of Climate Control." Wexler based his studies of geo-engineering on GCM modeling and recent satellite heat budget measurements. He explained techniques to cool and warm the planet, ways to destroy the ozone layer either inadvertently or with possible harmful intent, and warned about the dangers of climate control. 

I will then bring the story up to date to provide historical perspectives on today's climate engineers.