Powering the Future: Underwater turbines harness river power

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    Aug 20, 2013 4:55 PM GMT
    A drop in the bucket though, so to speak.

    New York City's East River isn't, technically, a river: It is a tidal strait that runs between Manhattan and Queens, connecting New York Harbor to Long Island Sound. But it sure can move like one: The current can reach a top speed of more than six feet per second, enough to turn swimming upstream into a serious challenge.


    http://www.cbsnews.com/8301-35040_162-57597091/powering-the-future-underwater-turbines-harness-river-power/
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    Aug 20, 2013 9:48 PM GMT
    There is great potential for these things, especially in areas with high tides. The Bay of Fundy, areas of Labrador, and (I think) parts of Norway are all promising. One of the biggest problem is that salt water is kind of evil when it comes to metal, so the turbines will need a lot of repairs and frequent replacement.