Entertainment

What is a Salmon Cannon?

viral

'Last Week Tonight with John Oliver' demonstrates.

articles/2014/11/10/what-is-a-salmon-cannon/141110-viralvid-salmon-tease_ouw54x

The battle between technology and nature has been ongoing for centuries, but sometimes technology tries to repair the damage. A perfect example is the salmon cannon, devised to help salmon get upstream despite hydroelectric dams presenting a roadblock—or perhaps, streamblock.

Last Week Tonight with John Oliver built their own salmon cannon,...

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