Fresh from a grueling sea journey of more than seven hours negotiating the world's busiest shipping lanes on a paddle board, Lizzie Carr is on a mission.
She recently became the first woman to cross the English Channel solo on the flimsy stand-up craft, to draw attention to the "global plastic crisis."
From fishing lines to flip-flops, there are more than 5 trillion pieces of plastic floating in the world's oceans, according to a 2014 study published in a Public Library of Science journal.
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