Planet Money

Planet Money explains itself like this: "Imagine you could call up a friend and say, 'Meet me at the bar and tell me what's going on with the economy.' Now imagine that's actually a fun evening."


#534: The History Of Light No ratings yet.

    Episode Description:

    In this episode: How we got from candles made out of cow fat to as much light as we want. The history of light is the history of economic growth — of things getting faster, cheaper, and more efficient.

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