A reality check on renewables - David MacKay

from TED-Ed · host TED-Ed

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. (Filmed at TEDxWarwick.)Lesson by David MacKay. Learn more about your ad choices. Visit megaphone.fm/adchoices

Episode metadata supplied by the publisher feed · Published Aug 12, 2026

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A reality check on renewables - David MacKay

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