Melissa Kearney, a professor of Economics at the University of Maryland, argues that "we can't keep ignoring the fact that the share of kids raised by one parent is rising — especially among lower income families, and that this is having an impact on the economic mobility of those children."

"Kids who grow up in two-parent households tend to have better outcomes, both in young adulthood and later in life."

The New York Times immediately dubbed Kearney's research a blind anti-feminist argument for entering into or staying in a marriage — but this, of course, entirely misses the point. Her research is thorough, nuanced, and clarifying.

What is happening to marriage and families in the US? Listen to Kearney's answer.