Across Washington State, hydroelectric dams are blocking salmon as they migrate to their spawning grounds. Enter the salmon cannon. Ingrid Taylar/Flickr hide caption

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The Salmon Cannon: Easier Than Shooting Fish Out Of A Barrel

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Amber McGowan, left, and Krystal Klacsan work Monday at Cannabis City in Seattle, a day before the store is to begin legal pot sales on Tuesday. The store will be for now the only one in Seattle to sell recreational marijuana. Ted S. Warren/AP hide caption

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Marine One, carrying President Obama, takes an aerial tour of Oso, Wash., on Tuesday. The president made a brief stop in the area devastated by last month's mudslide. Carolyn Kaster/AP hide caption

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