Indonesia ranks as one of the world's biggest contributors to ocean plastics, and a lot of it comes from rivers.
The local nonprofit Sungai Watch saves about 3 metric tons of trash from entering the ocean every day with simple barriers and manual labor.
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About 20 years ago, Bangladesh became the first nation on Earth to ban single-use plastic bags. Since then, plastic pollution has gotten worse. To find a biodegradable replacement, the government turned to jute, a cash crop grown here for centuries.
