Rio exhibit uses trash to stress pollution ahead of Olympics

Aired: 4/3/2015 | 0:01:51 | Clip
An art exhibition in Rio de Janeiro called Achados da Guanabara (Found in Guanabaraa) is trying to call attention to the city's pollution problem a year before the 2016 Summer Olympics by putting trash from a major bay on display in a shopping mall. Hari Sreenivasan reports.

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