Jeremy Grantham is a Boston financier who has found himself in the thick of the fight over climate change for more than twenty years. He’s the founder and chief strategist of Grantham Mayo van Otterloo, or GMO, which manages $112 billion in assets.

When we spoke to him in his Rowes Wharf office, overlooking Boston Harbor, Grantham calls himself a “scatterbrained” investor working with a third-rate education. If, after raising the alarm loudly and very early about the catastrophic market bubbles of 1999 and 2008, he’s become one of America’s most prominent financial strategists, it’s a tribute to natural patience and a conservatism that he chalks up to a Yorkshire childhood and a Quaker grandfather. But Grantham’s also glad to carry weight in the world of feverish investment. His quarterly letters have become must-reads, offering a warier look, going deeper into the future, than one usually finds on Wall Street. (His latest is here.)

Grantham discovered the fragility and beauty of the natural world on family trips into old and ravaged forests of the Amazon basin and Borneo. Now his family foundation is engaged in a farsighted effort to fight climate-skeptical “propaganda” with propaganda of its own: funding change-now messages from groups like Bill McKibben’s 350.org, Greenpeace, and the World Wildlife Fund. It’s the “race of our lives”, he wrote: against short-term psychology and an entrenched fossil-fuel economy. Grantham is troubled by the long odds, but still he’s trying to draw money and mass attention to an existential risk — before it’s too late to do anything about it. Call it the biggest short.

Photo credit: Remco Bohle.