How to rebuild our world from scratch using science: Lewis Dartnell at TED2015

We need More Science to Think about our life existence

TED Blog

Lewis Dartnell at TED2015 - Truth and Dare, Session 10. Photo: Bret Hartman/TED Lewis Dartnell at TED2015 – Truth and Dare, Session 10. Photo: Bret Hartman/TED

Time for a thought experiment: Imagine for a moment that global catastrophe struck and you needed to rebuild the world. How would you do it? This is a topic that astrobiologist Lewis Dartnell researched in depth for his recent book, The Knowledge. At TED2015, he shares some of the highlights.

The are three important areas that have allowed civilization to progress, says Dartnell: food, fire and science.

Food. You could probably live for 55+ years on the canned and preserved foods in your local supermarket. But to rebuild civilization, you’ll need to farm enough wheat, rice and maize to feed yourself and at least 10 other people. Throughout history, this ratio has allowed cilviizations to progress and develop over time. To accelerate growth, you’ll want to add millstones to grind wheat. “The most important inventions othat have…

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