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What will be the best renewable source of energy in 2050?

As of now, we have Wind, Water, Solar, Geothermal, and many more. But as our technology changes and diversifies, do you think we will use completely different sources?

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    Aug 7 2012: Thank you so much for two marvelous insights! I just recently saw the Whalepower design, but it didn’t dawn on me that vortices could have a dramatic positive on our design as well. But, of course! Wow, thanks! I will be getting in touch with them.

    And yes, I think there are a number of ways to funnel air flow using the support structure or other architectural features depending on where the turbine is being used. I know from living in New York City years ago that there are places in the urban environment that are like wind tunnels! People far brighter than I can certainly determine the best locations for potential urban wind turbines, and if a location could be greatly improved with the addition of some form of wind funneling structures, that in itself could lead to some very exciting, creative as well as functional, design challenges.

    Also, I will share with you the irony, that upon receiving your two terrific ideas on how this idea could be improved, I also received notice from the TED Conversations Admin that the conversation I had hoped to start by posting our website was removed as it is “too self-promotional for the TED.com community”. I am a TED community virgin, and regret any over reach on my part. In fact, I am struggling, having been inspired by over 120 TED speakers, on how to go about sharing this idea/invention so that it is put to the best use as quickly as possible by as many people that could benefit from it as possible, (open source, collaboration, etc.), and yet protect it so it doesn’t go down some get-rich-quick route for the already rich, or wallow in some bureaucratic research lab for years sucking up grant money and getting nowhere. I thought what better place to go for ideas, but TED! Now I know. But, any thoughts you have on that dilemma would be appreciated as well. I would certainly like to continue our conversation in the proper forum, perhaps by email, as we are a bit off topic for this thread.

    Again, thank you so much.
    David Brossman

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