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Chad Pregracke has made it his life's work to clean up the Mississippi River and other American waterways.
The story behind the Hero
In the past 15 years, Chad Pregracke has helped pull more than 67,000 tires from U.S. waterways. But that's just scratching the surface.
Want to get involved? Check out the Living Lands & Waters website and see how to help.
Support the cause
They've been romanticized in movies and songs, but many people really do send messages in a bottle. Chad Pregracke has found 64 of them.