SOURCE: New Scientist ($$), Skeptical Science

DATE: September 14, 2018

SNIP: Some patches of Arctic permafrost are bleeding acid as they melt. The dribble of acid is destroying rocks and releasing more carbon dioxide into the air – but it’s not clear how much.

Permafrost is soil and sand that is permanently frozen. Climatologists have warned for years that Arctic permafrost is thawing due to climate change. This will transform the landscape, and release carbon that is locked away in the permafrost in the form of carbon dioxide and methane – adding to the greenhouse effect. However, most climatologists think the extra warming will be minor compared to that directly caused by our emissions.

Now it seems that some regions of the Arctic might release more carbon dioxide than expected.