Tom Steyer: The hedge-fund tycoon squaring up to the Koch brothers

Tom Steyer © Getty images
Tom Steyer can be just as ruthless as the Koch brothers

Billionaires get frustrated with Washington, just like everybody else, says Businessweek. “The difference is that they can afford to do something about it.” Falling squarely into this new camp of activist tycoons is Tom Steyer, founder of the Californian hedge fund Farallon Capital Management, who has committed to using his considerable fortune “to fight climate-change deniers”.

Steyer’s mission isn’t sexy politically – even supporters concede that green [...]

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