EXCERPTS: According to a new study led by Mirjam van der Mheen, a doctoral candidate at the University of Western Australia, the Indian Ocean's unique geography, ocean currents, and atmospheric conditions actually appear to be preventing waste from piling up in a garbage patch. ... Since they couldn't track individual pie es of plastic, the team used the next best thing: GPS date from more than 22,000 buoys that have drifted around the oceans since 1979. Running the data through computer simulations provided a picture of how floating objects are pushed around by currents and wind.
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