How scientists are enhancing the ocean's ability to capture carbon

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As money pours into companies promising to take greenhouse gasses out of the atmosphere, there’s a small but fast-growing sector of startups that want to leverage one of the world’s biggest carbon sinks to clean up humanity's climate pollution: the ocean.

For Here & Now's series Reverse Course, Chris Bentley reported last year on some of the scientists and entrepreneurs developing ways to enhance the ocean's natural ability to take carbon dioxide out of the atmosphere.