This week, Peter Greenberg Worldwide broadcasts from Buenos Aires and the annual World Travel and Tourism Council Global Summit. Joining Peter is Marriott CEO Arne Sorensen, Chris Thompson, President and CEO of Brand USA and Roger Dow, President and CEO of the U.S. Travel Association. Costas Christ, Editor at Large for National Geographic Traveler, speaks about the importance of and a new definition of sustainable travel for post-boomers, millennials and gen-z. And Greg O’Hara, Founder and CEO of Certares, explains how the widening worldwide income gap is affecting the travel industry as well as demand elasticity in travel. And some breaking travel news as well — Saudi Arabia changing the rules and the implications of a once closed country now beginning to issue tourist visas. There’s all of this and more as Peter Greenberg Worldwide broadcasts from the WTTC Annual Global Summit in Buenos Aires, Argentina.

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Check out this week’s guest list, listen to the latest all-local podcast, and play the full show below. For the most up-to-date information on travel in a 40-minute podcast, check out Travel Today with Peter Greenberg available on iTunes and Stitcher.