WCSU

Heidi Glenn

In a new book, The Complacent Class, economist Tyler Cowen argues that the United States is standing still.

People have grown more risk averse and are reluctant to switch jobs or move to another state, he says, and the desire to innovate — to grow and change — has gone away.

In an interview with NPR's Rachel Martin, Cowen says he's worried that more and more communities are self-segregating — by income, education or race.