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Ebola Prevention Supplies Running Short In Liberia

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Turkey Is Major Transit Route For Islamic State Fighters

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Ukraine Crisis Casts Long Shadow Over NATO Summit

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Syria Crisis Complicates U.S.-Iran Nuclear Talks

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Citizen Scientists On A Mission To Find Frogs

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Study Finds Nothing Special About Breakfast

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Trial Will Decide Detroit's Fiscal Future

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Miami Struggles To Embrace Unaccompanied Immigrants

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U.S. Launches Airstrikes To Help Aid Reach Iraqi Town

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Across Washington State, hydroelectric dams are blocking salmon as they migrate to their spawning grounds. Enter the salmon cannon.

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

Ever since rivers have been dammed, destroying the migration routes of salmon, humans have worked to create ways to help the fish return to their spawning grounds. We've built ladders and elevators; we've carried them by hand and transported them in trucks. Even helicopters have been used to fly fish upstream.

But all of those methods are expensive and none of them are efficient.

Enter the salmon cannon.

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