One feature of compounds made with transition metals is their intense colour. There are many examples in nature, including gemstones and paint pigments. Even the colour of blood comes from the protein ...

The colors of rubies and emeralds are so striking that they define shades of red and green - ruby red and emerald green. But ...

A half-page ad in The Oregonian in 1964 billed the Fontaine as “Portland’s newest and finest address,” and this recently ...