More than half of all Japanese women quit their jobs after giving birth to their first child. That’s more than double the rate in the U.S., and it’s a problem for Japan’s economy. If more women returned to the workforce, it would go a huge way toward boosting growth in the country and solving a big demographic problem — not enough working people to support the nation’s retirees. But finding childcare in Japan is even harder than finding childcare in the U.S. The long-term solution is robot nannies. (Really.) On today’s show: How Japanese working moms can survive until the robots arrive. For More: Will Robot Nannies Save Japan’s Economy?