Acid is dribbling out of the melting permafrost in the Arctic

 作者:苍槌亳     |      日期:2019-03-04 01:03:00
By Michael Marshall SOME patches of Arctic permafrost are leaking acid as they melt. The dribble of acid is destroying rocks and releasing more carbon dioxide into the air – but it isn’t clear how much. Permafrost is soil and sand that normally remains frozen. Climatologists have warned for years that Arctic permafrost is thawing because of climate change. This will transform the landscape,