1
Published in 2012
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.
Grade Level   6 7 8 9 10 11 12
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2
By TEDx
Published in 2016
While studying sediments on the ocean floor to trace the history of the earth, Ali noticed tiny creatures were re-shuffling small sediments of earth, changing its order. What are the implications of this discovery? Find out in this informative talk. Ali earned his Master's degree from the University...
Grade Level   9 10 11 12
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