What does it take for an idea to change the world? This new monthly series examines how innovation really works. The lithium-ion battery is the most important factor in the recent rise of the electric car and also powers everything from toothbrushes to smartphones to lawnmowers. We talk to the Nobel prize-winning scientists, the co-founder of Tesla and the pioneers behind this game-changing technology. What does their story tell us about the nature of innovation? Tom Standage hosts.

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