20/11/2025

Isotope-based method can detect unknown selenium compounds

Although present in very small amounts, selenium (Se)-based compounds play important roles in protecting the body from oxidative stress, regulating thyroid hormones, strengthening the immune system, and even detoxifying heavy ...

Who wins and who loses as the US retires the penny

By now, Americans know the strange math of minting: Each penny costs about 4 cents to make. Chances are you have some in a jar, or scattered among pockets, purses and car ashtrays.

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