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![Sustainable olympics DV 1.jpg](https://cdn.statically.io/img/media.cnn.com/api/v1/images/stellar/prod/sustainable-olympics-dv-1.jpg?c=16x9&q=h_270,w_480,c_fill)
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2:26
Cardboard beds and sidewalks made of shells. Could this be the most sustainable Olympic Games?
2:26
![Environmental Protection Agency administrator Michael Regan speaks at a news conference May 5, 2022, at the Department of Justice in Washington.](https://cdn.statically.io/img/media.cnn.com/api/v1/images/stellar/prod/230411100956-02-ethylene-oxide-epa.jpg?c=16x9&q=h_270,w_480,c_fill)
Michael Regan’s EPA is facing the harshest legal headwinds in history. Here’s why he’s still bullish
![Paris Balloon DV 4.jpg](https://cdn.statically.io/img/media.cnn.com/api/v1/images/stellar/prod/paris-balloon-dv-4.jpg?c=16x9&q=h_270,w_480,c_fill)
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Video
2:34
This technology could help keep athletes safe from pollution in the Olympic Village
2:34