Nation Aug 25

Watch 9:24
At the pool with freestyle phenom Katie Ledecky

Katie Ledecky was one of the most triumphant athletes of the Rio Olympics. The 19-year-old swimmer overwhelmed her competition; in the 800-meter race, she finished nearly a pool length ahead of second place. Known for relentless training and humility, she…

PayPal co-founder Peter Thiel has argued that college is overvalued in this country and that not everyone should go. He's even called it a bubble -- like housing. But entrepreneur and academic Vivek Wadhwa defends higher education, calling Thiel's ideas…

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