![NPR Topics: Story of the Day Podcast show](https://d3dthqtvwic6y7.cloudfront.net/podcast-covers/000/011/349/small/npr-story-of-the-day.jpg)
Summary: Coastal fish farms are a major source of the seafood we eat, but all the fish waste they generate takes a toll on the environment. So a researcher in Canada is trying to clean up fish farms by creating an ecosystem where fish waste gets taken up by other valuable seafood commodities, like shellfish and kelp.