By Reuters Staff ENVIRONMENT MARCH 19, 20219:14 PMUPDATED 2 DAYS AGO www.reuters.com/video/?videoId=OVE4R8NS7&jwsource=em Is it snowing microplastic in Siberia? | Reuters Video Russian scientists are trying to understand the scale of a potential threat to the environment in Siberia: snow polluted with microplastics that then melts and seeps into the ground. www.reuters.com MOSCOW (Reuters) - Rus..