Meet the guy who wants to help save the planet with thousands of buoys, seaweed and giant antacids

Marty Odlin, the CEO of Running Tide, wants to absorb carbon dioxide from the air and sea with a network of kelp-growing buoys. (Evelio Contreras/CNN) Marty Odlin, the CEO of Running Tide, wants to absorb carbon dioxide from the air and sea with a network of kelp-growing buoys. (Evelio Contreras/CNN)

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Russian missiles kill at least 21 in Ukraine's Odesa region

Russian missile attacks on residential areas killed at least 21 people early Friday near the Ukrainian port of Odesa, authorities reported, a day after the withdrawal of Moscow's forces from an island in the Black Sea seemed to ease the threat to the city.

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