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TORONTO Researchers have found microplastics in human placenta for the first time, according to a new paper, shedding light on just how pervasive these tiny particles can be, not just in our landscape, but within our bodies. Microplastics are created by the degradation of larger plastic items that have been abandoned in the environment. Microplastics are smaller than five millimetres, and they’ve been found before in oceans, soil, fish and mammals, among other things. The Italian study, published online in early December ahead of its inclusion in the January edition of Environment International, reported that microplastics were found in the placentas of four out of six women who had consented to donate them for research.