Over 40 percent of U.S. births are to unmarried mothers, and the numbers are especially high among the less-educated. Why? One argument is that the decline in good manufacturing jobs led to a decline in "marriageable" men. Surely the fracking boom reversed that trend, right?

Charles Koch, the mega-billionaire CEO of Koch Industries and half of the infamous political machine, sees himself as a classical liberal. So why do most Democrats hate him so much? In a rare series of interviews, he explains his political awakening, his management philosophy, and why he supports legislation that goes against his self-interest.