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Rated: 8.7 out of 10 with 122,444,987 votes.
How much land mass would renewables need to power a nation like the UK? An entire country's worth. In this pragmatic talk, David MacKay tours the basic mathematics that show worrying limitations on our sustainable energy options and explains why we should pursue them anyway. (movieed at TEDxWarwick.) Lesson by David MacKay..
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8.7 PG-13 FR
Keywords: A reality check on renewables - David MacKay ,

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