One feature of compounds made with transition metals is their intense colour. There are many examples in nature, including ...

Both rubies and emeralds are minerals, which is a type of rock with a consistent chemical composition and a highly ordered ...

Perpetua Resources, the mining company planning to dig in the mountains outside McCall, promises to clean up the site — including the damage done by decades of previous mining.

While, yes, it’s a cliché, jewelry (like flattering lingerie and fancy chocolates) is a Valentine’s Day gift your beloved ...