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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U.K.'s Boris Johnson defiant even as dozens of officials quit

British Prime Minister Boris Johnson has rejected clamors for his resignation from his Cabinet and across the Conservative Party, digging in his heels Thursday even as dozens of officials quit and previously loyal allies urged him to go after yet another scandal engulfed his leadership.

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