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ARLINGTON, VIRGINIA - NOVEMBER 23:  Travelers make their way to flights in the concourse of Ronald Reagan Washington National Airport on one of the nation's busiest travel days of the year November 23, 2011 in Arlington, Virginia. The American Automobile Association projects that 42.5 million people are likely to drive, fly or take the train to their Thanksgiving gatherings, the largest number since the beginning of the recession.  (Photo by Win McNamee/Getty Images)
ARLINGTON, VIRGINIA - NOVEMBER 23:  Travelers make their way to flights in the concourse of Ronald Reagan Washington National Airport on one of the nation's busiest travel days of the year November 23, 2011 in Arlington, Virginia. The American Automobile Association projects that 42.5 million people are likely to drive, fly or take the train to their Thanksgiving gatherings, the largest number since the beginning of the recession.  (Photo by Win McNamee/Getty Images)

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How travel can make the world a better place

Author Andrew Solomon speaks to CNN's Nima Elbagir about his new book on the endless benefits of traveling and why he believes it can change the world.

How travel can make the world a better place

Author Andrew Solomon speaks to CNN's Nima Elbagir about his new book on the endless benefits of traveling and why he believes it can change the world.