Small variations in clumped O2 isotopes reflect temperatures in the upper troposphere. Bubbles measured in polar ice cores show the global lapse-rate appears to steepen during the Last Glacial Maximum.
Blending geoscience and archaeology, researchers apply a new technique to pinpoint where ancient and unique gold artifacts were crafted.
Researchers identify the first evidence of microbial respiration in desiccated Antarctic permafrost soils.
Researchers collected carbon from 3 years' worth of air samples and traced it back to its source.