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TEDxWarwick - David MacKay - How the Laws of Physics Constrain Our Sustainable Energy Options

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Published on Mar 22, 2012

Department of Climate Change Chief Scientific Advisor, Professor David MacKay FRS, is responsible for ensuring the best science and engineering advice underpins DECC's policy and decision-making.
In addition to his role at DECC, David is Professor of Natural Philosophy in the Department of Physics at the University of Cambridge. He studied Natural Sciences at Cambridge and then obtained his PhD in Computation and Neural Systems at the California Institute of Technology. He returned to Cambridge as a Royal Society research fellow at Darwin College. He is internationally known for his research in machine learning, information theory, and communication systems, including the invention of Dasher -- a software interface that enables efficient communication in any language with any muscle. He has taught Physics in Cambridge since 1995 and he is a Fellow of the Royal Society.
David is the author of the critically acclaimed book, Sustainable Energy — Without the Hot Air, which is intended to help people understand the numbers around sustainable energy.

In the spirit of ideas worth spreading, TEDx is a program of local, self-organized events that bring people together to share a TED-like experience. At a TEDx event, TEDTalks video and live speakers combine to spark deep discussion and connection in a small group. These local, self-organized events are branded TEDx, where x = independently organized TED event. The TED Conference provides general guidance for the TEDx program, but individual TEDx events are self-organized.* (*Subject to certain rules and regulations)

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Top Comments

  • 74357175

    There are plenty of situations where 8 km or 25 km doesn't matter in order for a point to be valid. What matters is it's much much greater than, say, 0.01 km. It's called Seeing the Forest for the Trees, and is the essence of Science.

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    in reply to Jeannette Blanchard (Show the comment)
  • trentbusta1

    Propaganda is a form of communication that is aimed towards influencing the attitude of a community toward some cause or position by presenting only one side of an argument. Propaganda is usually repeated and dispersed over a wide variety of media in order to create the chosen result in audience attitudes. The fact that the average person's power needs can easily be sourced from solar panels on there individual roofs,and barely gets a mention begins to ensue propaganda .

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    in reply to Ethan Silver (Show the comment)

All Comments (126)

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  • dewin5ify

    I found that really valuable. I stumbled upon this coz my buddy grew to become a lady-magnet - and he's overweight He went from a nobody into being incredible. He pretended he didn't realize. He ultimately admitted it two days ago. Turns out he uses the Jake Ayres Master Attraction Formula. Google it if you want to learn about it... He's on a date today with a stunning girl... Lucky bastard!

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  • hewholistenstomusic

    or geothermal. Check out Chena hot springs for an example of how to do sustainable energy right

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    in reply to Dame Makedonski (Show the comment)
  • trentbusta1

    Our report involved 52 respected scientists.

    The new data, based on Belarus national cancer statistics, predicts approximately 270,000 cancers and 93,000 fatal cancer cases caused by Chernobyl. The report also concludes that on the basis of demographic data, during the last 15 years, 60,000 people have additionally died in Russia because of the Chernobyl accident, and estimates of the total death toll for the Ukraine and Belarus could reach another 140,000.

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  • trentbusta1

    I'm sure you are aware of the hundreds of thousands of Japanese women,men and children that have been and are being affected by the nuclear meltdowns,these people's D.N.A is damaged for ever they will give birth to children with genetic defects as well as there children's children.I don't know if you've ever had a loved one die of cancer ?Thousands upon thousands will develop cancer as a result and the community will suffer on a broader scope as it effects there relatives and friends.

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  • trentbusta1

    If he had done the research he would have come to this conclusion, here in australia many people reach there energy needs very easily,using solar infact they often make a pretty some of money buy selling the extra energy back to the power companies, the same goes for germany.20% of germany's total energy production comes from renewable energy.All we need is more education to help people to jump on board, another reason is theres an upfront cost to get started.

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    in reply to trentbusta1 (Show the comment)
  • trentbusta1

    More than adquate power is generated can be generated on the roof of the average persons house,using solar panels,countries that have less sun hours can be boosted by number of other renewable sources.this has the added benefit of putting some power back in the hands of the people which is a wonderful thing.

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  • Ermin0s

    Nuclear is also fossil fuel as i checked, so thats not sustainable.

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