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Intricate blue tiles adorn the walls of a large Iranian mosque and mirror a clear sky that beckons the faithful to the sunny courtyard. The mosque's many arches are a prominent feature of Islamic architecture.
Take a photographic journey through Montana and enter for a chance to win a trip for two!
Eighteen percent of the world's population can't get safe drinking water. Test your water knowledge.
When making long exposures, use a remote release to avoid camera movement. If you don't have a remote release, use the camera's self-timer.
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