The Trash Trail: Why is there so much plastic in the ocean?
Brains On! Science podcast for kids
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How to Catch Plastic Before It Floats Out to Sea
Baltimore, Maryland has four trash wheels. They have googly eyes and big gaping mouths that scoop up trash as it floats towards them on the river. Using the current of the river and solar power, they rake the trash into their mouths Up a conveyor belt and into their tummies - which are just big dumpsters. Baltimore's first trash wheel was introduced in 2014, and since then, the wheels have collected around 2,300 tons of trash.
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