Why do we have the National Weather Service?

Most Americans can look down at their phone and see a prediction of the future. How is that even possible?

Well, we'll tell you. Today it's all about the weather; from early predictive methods and almanacs to the National Weather Service's modern-day practices of collecting, analyzing, and sharing a staggering amount of data. First we talked with Kris Harper, a professor of history and philosophy at the University of Copenhagen, and then with Felicia Bowser, a meteorologist at the National Weather Service in Tallahassee, Florida.

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