Brazil Made Big Environmental Promises for Its Rio Olympics. Here's Why It Won't Keep Them.

RIO DE JANEIRO, BRAZIL - APRIL 16: A man walks near the entrance to Olympic Park, the primary set of venues being built for the Rio 2016 Olympic Games, on April 16, 2014 in Rio de Janeiro, Brazil. More than 2,000 workers have been on strike at the site for the past two weeks in spite of an apparent new settlement. (Photo by Mario Tama/Getty Images)
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