Shipping industry takes a page from bitcoin to clean up its act

A 960-foot-long freighter crossed the Atlantic Ocean last week running on a mix of biofuels and oil, not the usual super-polluting bunker fuel. Yet that lower-carbon fuel sloshing in Frontier Sky’s tanks wasn’t the only novelty. The vessel’s operators also used a much-buzzed-about technology to verify the ship’s carbon emissions as it traveled from the Netherlands to eastern Canada.

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