Motherhood is changing, as are mothers' working lives — and those changes have economists concerned.
For a while there, women around the world were making clear economic progress. More were working, and they were earning more (and boosting the global economy in the process).
But in the last few decades, that progress has stalled. Women's participation in the U.S. workforce peaked two decades ago. And today, women are making big changes to when, and whether, they have children.