Hillary Clinton arrives to sign her book "Hards Choices" at a bookstore on Martha's Vineyard on August 13, 2014. According to the Clintons' 2015 tax returns, the couple earned $3.1 million from book advances and royalties. Nicholas Kamm/AFP/Getty Images hide caption

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When mental health professionals don't take insurance, only the wealthy can afford their help. Joe Houghton/Getty Images hide caption

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How Therapy Became A Hobby Of The Wealthy, Out Of Reach For Those In Need

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'You Couldn't Make This Stuff Up': Inside The Lives Of The 'China Rich'

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Visitors walk past a portrait of late communist leader Mao Zedong on Tiananmen Gate in Beijing on Sept. 30, the eve of National Day. Greg Baker/AFP/Getty Images hide caption

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Capitalism Is Making China Richer, But Not Democratic

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Two recent tallies of the world's richest people agree on the broad points — but not on which continent has the most billionaires. Here, U.S. dollars are counted, with Chinese yuan notes in the background. STR/AFP/Getty Images hide caption

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