Transcript
RENEE MONTAGNE, HOST:
The hot book out right now is called "Capital in the Twenty-First." It's a rather wonky tome about inequality by French economist Thomas Piketty. He's been selling out events on his U.S. tour.
NPR's Kelly McEvers went to find just why his 700-page book is so popular.
KELLY MCEVERS, BYLINE: The book has spent 43 days as Amazon's number one bestseller.