An oyster shucker on Samish Island, Wash. on Puget Sound. The state is frequently forced to close beaches to oyster gatherers because of the risks of harmful algae blooms. Ted S. Warren/AP hide caption

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Researchers have analyzed the fossil imprints of of raindrops, like the ones shown here, to study the atmosphere of the Earth, as it was 2.7 billion years ago. The rule at the top is 5 centimeters, or about 2 inches, long. W. Alterman/University of Pretoria hide caption

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Pinon pine trees like this one dominate Rattlesnake Canyon. Jeff Mitton hide caption

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Mike and Chantell Sackett of Priest Lake, Idaho, pose for a photo in front of the Supreme Court in Washington on Oct. 14, 2011. The court ruled unanimously Wednesday that property owners have a right to prompt review by a judge of an important tool used by the Environmental Protection Agency to address water pollution. Haraz N. Ghanbari/AP hide caption

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A drilling rig sits on Oooguruk Island off the coast of Alaska's North Slope. The 6-acre island was built by Pioneer Natural Resources so it could drill for oil on the Arctic Ocean. Steve Quinn/AP hide caption

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A bald eagle in flight. The Northern Arapaho Tribe in Wyoming has won an unprecedented permit to hunt two bald eagles for use in religious ceremonies. hide caption

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JBI CEO John Bordynuik holds a jar of No. 6 fuel oil, derived from discarded plastic like that seen on a conveyor belt at his plant. Daniel Robison/WNED hide caption

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