Metal Stable Isotopes in Low-Temperature Systems: A Primer The Odds and Evens of Mercury Isotopes: Applications of Mass-Dependent and Mass-Independent Isotope Fractionation Reconstructing Paleoredox Conditions through Multitracer Approaches: The Key to the Past Is the Present Marine Calcification: An Alkaline Earth Metal Isotope Perspective Combining Metal Stable Isotope Fractionation Theory with Experiments Fractionation of Metal Stable Isotopes by Higher Plants Environmental and Biomedical Applications of Natural Metal Stable Isotope Variations