Earth's gold came from colliding dead stars

[unable to retrieve full-text content]We value gold for many reasons: Its beauty, its usefulness as jewelry, and its rarity. Gold is rare on Earth in part because it's also rare in the universe. Unlike elements like carbon or iron, it cannot be created within a star. Instead, it must be born in a more cataclysmic event -- like one that occurred last month -- known as a short gamma-ray burst.

Source: http://feeds.sciencedaily.com/~r/sciencedaily/top_news/top_science/~3/SyS7qnykJfU/130717134921.htm

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