Radioactive isotopes have been discovered by Russia's state weather agency in test samples more than two weeks after a mysterious and deadly explosion earlier this month at a naval weapons testing ...

Naturally-occurring deuterium stable isotope ratios can potentially be used to trace water resource use by animals, but estimating the contribution of isotopically distinct water sources requires the ...

OTTAWAOTTAWA — Canadian officials have again shut down a nuclear reactor that produces much of the world’s radioactive isotopes used to diagnose cancer patients through medical imaging. Patients in ...

Each day in the United States, roughly 56,000 patients have a test that can help diagnose heart problems, cancer progression in bones and other medical conditions. The most common version is a nuclear ...