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Isotopes

Deuterium Carbon-14 Carbon Isotopes Elemental Composition Lithium Isotopes Isotopic Analyses Hydrogen Isotopes Nitrogen Isotopes Oxygen Isotopes Magnesium Isotopes Diet Analysis Sulphur Isotopes Sulfur Isotopes Zinc Isotopes Hydrogen Atoms Radioactive Isotopes Organic Chemistry Deuterium-Hydrogen Ratio Copper Isotopes Potassium Isotopes Heavy Water Promethium-147 Chemical Composition Geographical Fingerprint Actinium-227

Study Traces Moon-Maker Theia to the Inner Solar System

A Science paper uses high‑precision isotope data and mass‑balance modeling to infer an inner‑Solar‑System origin for the Moon‑forming impactor.

MIT Team Finds Potassium-40 Anomaly That Points to Surviving Proto‑Earth Mantle

FDA Blocks Indonesian Clove Shipment Over Cesium-137, Puts Two Exporters on Import Alert