ScienceDaily: Soil water and microbes' respiration contribute to fluctuations of carbon dioxide in the world's coldest desert, where climate change is expected to increase underground moisture and microorganisms, an Arizona State University and Dartmouth College study finds. The findings appear in the journal Antarctica Science. In the McMurdo Dry Valleys of Antarctica, climate warming is creating wetter conditions that are changing the soil in this climate-sensitive ecosystem. Previous studies have shown that...