How I Got Down in the Mud to Photograph Greenhouse Gases

Mud and invisible gas. I’m not sure there are two less photogenic things to capture in nature, but they were central characters in my recent long-term photography project documenting permafrost thaw in the Siberian and Alaskan Arctic. Permafrost is defined as soil that has been frozen for more than a year, and it can be found in a vast belt circling the Arctic.