Silicon (Si) - chips - a podcast by BBC World Service

Silicon is synonymous with the computer revolution. We travel to its eponymous birthplace - Silicon Valley in California - to ask chip pioneers Intel why this chemical element has supported a billion-fold increase in computing power, and whether the exponential improvement implied by "Moore's Law" has reached the end of the line.

(Picture: Intel 22 nanometre transistor; Credit: Intel)

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