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Politics : Formerly About Advanced Micro Devices

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pocotrader
To: Tenchusatsu who wrote (1483820)9/7/2024 8:55:31 AM
From: Eric1 Recommendation   of 1575399
 
Forgot to post this link:

NOVA episode

Planet Earth

The Undamming of America

We’ve impounded rivers for hundreds of years, but as our society has evolved, so has our relationship with dams.

At the Elwha Dam in Washington state, Martin Doyle recalls looking down to see salmon paddling against the base of the dam, trying in vain to reach their spawning grounds upriver. Roughly 98% of the salmon population on the Elwha River disappeared after the dam went up, says Amy East, a research geologist at the U.S. Geological Survey (USGS). Doyle points out that salmon are just one of many species affected by dams. Migratory shad, mussels, humpback chub, herring—the list goes on. He notes that the charismatic salmon are a more popular example than the “really butt-ugly fish we’ve got on the East Coast.

pbs.org
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