We mostly know how the billionaire Koch brothers spend their money – our own Scott Horsley describes it as “a hydra-headed network of think tanks, lobbying shops, and ‘astroturf’ advocacy groups to advance a philosophy that conveniently overlaps with the economic interests of their Wichita-based corporation.” But, he says, Christopher Leonard’s Kochland is more concerned with how they made their fortune. Check out his review here.

– Petra