Multi-purpose Selenium Tells Us About Global Warming, Cleans Our Hair And Fends Off Alien Invaders

It's an ingredient found in dandruff shampoos and, if you're a movie buff, you also know it was used to help fight off alien invaders in the film "Evolution." Scientists at the University of Leicester are now using selenium as a tool in investigating how the oxygen content of the oceans has changed over geologically recent time. Selenium is an anti-oxidant and an essential trace nutrient in our diet. It belongs to a group of elements whose behavior is controlled by the concentration of oxygen in the environment. Now scientists are using selenium as part of a research project to measure the isotopic ratios of selenium in sediments. read more

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