It hardly snows in the Arctic. Dickens once said, "This is the best time and the worst time." This sentence is used to describe the present, but it is actually more appropriate. Nowadays, the impact of human activities on the beautiful planet on which human beings depend is not only unprecedented, but also irreversible. From August, 2065438 to August, 2009, scientists discovered a large number of microplastics in the Arctic Snow Land, which is known as "the last pure land of mankind". On average, samples from Arctic ice floes contain 1760 microplastics particles per liter. This means that even in the Arctic, people may inhale microplastics from the air. Microplastics is not a special kind of plastic, but any plastic fragments less than 5 mm in length, which enter the natural ecosystem through various sources, including cosmetics, clothing and industrial processes. So, how did they get to the North Pole? Researchers believe that microplastics will drift with the wind, and after long-distance transmission in the atmosphere, these particles will be "discharged" from the atmosphere through precipitation, especially snowfall. The researchers wrote in the paper: "The high concentration of plastics detected in snow samples from the European continent to the Arctic indicates that air pollution is serious, and it is urgent to pay attention to the impact of plastic particles in the air on human and animal health." A local resident said: "This makes me very sad. Before, there was plastic in sea ice, and there was plastic in sea water and beaches. There is plastic in the snow now. Here, we witness its beauty every day, and we feel very sad to see that it has changed so much and it has been polluted. " Source: composition communication high school edition