Today older Americans are heading back to school in record numbers. The National Center for Education Statistics estimates that students aged 25 years or older make up around 40 percent of college students. Many of these students have already advanced in a career, but want to gain knowledge or skills that can make them more competitive in the workplace. And colleges are struggling to deal with the different demands that older students make on a campus.

Chris Farrell joins us on the podcast this week to talk about this trend. He’s a senior economics contributor at Marketplace and a columnist and Bloomberg Business Week. Farrell’s latest book is called “Unretirement: How Baby Boomers Are Changing the Way We Think About Work, Community and the Good Life.”