Terry Gross

On Fresh Air, social historian Stephanie Coontz explains how the publication of Betty Friedan's The Feminine Mystique in 1963 helped women view themselves differently. But Coontz, author of A Strange Stirring, also critiques many aspects of Friedan's pioneering book, including its omission of minority women.

Using a shared currency has made it difficult for Europe to recover from its economic crisis, Nobel Prize-winning economist Paul Krugman says. He explains why the euro experiment may fail — and what that would mean for the global trading system.

It is possible that there are many other universes that exist parallel to our universe. Theoretical physicist Brian Greene, author of The Elegant Universe, explains how that's possible in the new book, The Hidden Reality.