Plastic trash flowing into the seas will nearly triple by 2040 without drastic action

An ambitious plan, two years in the making, might have the solution.

The amount of plastic trash that flows into the oceans every year is expected to nearly triple by 2040 to 29 million metric tons.

That single, incomprehensibly large statistic is at the center of a new two-year research project that both illuminates the failure of the worldwide campaign to curb plastic pollution and prescribes an ambitious plan for reducing much of that flow into the seas.

No one knows for certain how much plastic, which is virtually indestructible, has accumulated in the seas. The best guess, made in 2015, was about 150 million metric tons. Assuming things remain the same, the study estimates that accumulation will become 600 million metric tons by 2040.

The project, developed by the Pew Charitable Trusts and

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