You might best know chromium as a bright, shiny metal used in bathroom and kitchen fittings. But is it also essential for ...

Hexavalent chromium is a type of the element chromium. Doctors have found that it can cause cancer and harm other parts of your body. Chromium is naturally found in animals, rocks, plants, soil, gases ...

The EPA said that trivalent chromium is an essential human dietary element and can be found in many vegetables, fruits, meat, grains and yeast. Hexavalent chromium occurs naturally in the environment ...

The origin of Mercury, the closest planet to the sun, is mysterious in many ways. It has a metallic core, like Earth, but its core makes up a much larger fraction of its volume – 85% compared to 15% ...