Chromium (Cr) is a metal with a unique relationship with the environment. While trivalent chromium (Cr(III)) is a necessary nutrient, hexavalent chromium (Cr(VI)) is toxic to humans and aquatic life, ...

Chromium (Cr) species can occur in a number of oxidation states, but – Cr(III) and Cr(VI) – the trivalent and hexavalent oxidation states are the most common in the environment. The chemistry and ...

This is literally a sugarcoated story about how a simple and abundant molecule can rid the world of a deadly pollutant that causes cancer and a long list of horrific maladies ranging from skin ...

In the 2000 film Erin Brockovich, Julia Roberts plays a scantily-clad file clerk in a small law firm who traces a cluster of health problems in a California desert town to a chemical in the ...