This week, Studio 360's American Icons series continues with a ride on America's favorite bike – The Harley-Davidson. A mathematics professor explains hyperbolic geometry with crochet. And after a 20 year hiatus, Kurt Cobain's favorite band, The Vaselines, is back making music.
Support the journalists who bring The World to you. For a limited time, when you make a gift in any amount, you’ll help us unlock $30,000 in challenge funds.