The element gold is a pirate's booty and ... according to the journal PNAS. Gold swiftly came to be a symbol, and unit, of wealth, and it has maintained this allure through time and around the ...

Gold — atomic number 79, element symbol Au, the most widely beloved of the precious metals — might have its origin in extremely rare and violent explosions in the far reaches of outer space.

The chemical symbol for oxygen is O ... Sometimes these events weren’t recorded (as with gold or iron, which were known by ancient civilizations and haven’t been credited to a single ...