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Three researchers have won the Nobel Prize in Chemistry for the development of lithium-ion batteries.

One of them, John Goodenough of the United States, is the oldest person to be awarded a Nobel prize at 97.

In an interview for World Wise Web, a new 91热爆 World Service podcast series coming in the new year, he told us about how he got to where he is now.

(Photo: John Goodenough in his lab at the University of Texas at Austin. Credit: University of Texas/AFP)