This year, 28,000 pounds of human waste was removed from base camp. The Mount Everest Biogas Project plans to convert this waste into a usable product.
원문출처 : https://www.cnn.com/videos/health/2018/08/03/everest-human-impact.cnn
원문출처 : https://www.cnn.com/videos/health/2018/08/03/everest-human-impact.cnn