Unsafe levels of selenium, sometimes referred to as an "essential toxin," can be reduced by a microbiological treatment. With this method, microorganisms reduce selenate to the less-toxic elemental ...

Selenium, an 'essential trace element' often included in multimineral supplements, may not be as important as once thought. Although this trace element is essential in the diet of humans, it seems ...

Exactly 200 years ago, the Swedish scientist Jöns Jacob Berzelius discovered the trace element selenium, which he named after the goddess of the moon, Selene. Besides its industrial applications ...