Trekking Tourism Leaves a Microplastic Footprint in a High Himalayan Lake
塑料污染可能会波及下游，威胁依赖冰川水源的人类和野生动物群落。
Pay Dirt: How Colonialism Left Its Mark on the Soil of the American Southwest
一个高山湖泊里留存着西班牙征服者在西南部殖民时如何扬起尘土的痕迹。
