Sebastiaan De Vos, right, the general manager of Vienna's Magdas Hotel, recruits refugees like 24-year-old Ehsan Amini, left, to work at the hotel. Amini, who works in the Magdas cafe, fled Afghanistan and arrived in Austria five years ago. He's one of 20 refugees staffing the hotel. Joanna Kakissis for NPR hide caption

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A view of the opening of COP21 on climate change Monday in Paris. More than 150 world leaders are meeting for the 21st Session of the Conference of Parties to the United Nations Framework Convention on Climate Change. Patrick Aventurier/Getty Images hide caption

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A power-generating windmill turbine is seen in front of the Arc de Triomphe on the Champs Elysees avenue in Paris ahead of the COP21 World Climate Summit, which begins Monday. Christian Hartmann/Reuters /Landov hide caption

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President Obama (center) and Secretary of State John Kerry (right) attend Monday's opening ceremony of the United Nations Climate Change Conference in the Paris suburb of Le Bourget. Thibault Camus/AP hide caption

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A demonstrator kicks a tear gas canister during clashes with riot police near the Place de la République after the cancellation of a planned climate march. Eric Gaillard /Reuters /Landov hide caption

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