几年前，人们惊讶地发现，美国阿拉斯加数十条河流里的水变成了“橙汁”。研究指出，事实上，这是被铁锈污染的河流，而铁锈则来自因全球变暖而融化的冻土。 卫报截图 Dozens of rivers and streams in Alaska are turning rusty orange, a likely consequence of thawing permafrost, a new study finds. 研究作者、加州大学戴维斯分校环境毒理学助理教授布雷特·普林说：“这是美国最原始的一些河流中看到的气候变化的不可预见影响。” The permafrost thaw is exposing minerals to oxygen in a process known as weathering, which increases the acidity of the water and dissolves metals like zinc, copper, cadmium and iron – the most apparent metal that …
The warming Arctic tundra will make it harder for the world to curb climate change, as thawing permafrost and wildfires release greenhouse gases that are not fully accounted for in global emissions agreements, a study said on Monday. “The Arctic is in the process of disintegrating as we know it, and the permafrost is one major component with some pretty …
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