Articles written by U.s. Geological Survey

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Closeup of the face of green goblin with a miner’s light strapped to its head.

Curse of the Kobold: A Halloween tale

Deep in the dark mines and forests of Germany, in the days long before electricity when flickering torchlight made shadows come to life, whispers told of mysterious and ominous creatures waiting to prey on... — Updated 11/10/2023

 
Fireworks light up the sky behind the Capitol Building in Washington, DC.

Coloring our skies, powering our lives

What's the secret behind the bright colors lighting up the US night skies on the 4th of July? The answer is minerals! Each color is the result of specific chemicals derived from different minerals. Read... — Updated 7/24/2023

 

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