The Pulse

Happy Birthday, America! To celebrate the holiday, we dig into the science that makes fireworks sparkle, flags durable, and hot dogs delicious. Plus, what brain researchers are learning about the pursuit of happiness and feelings of patriotism.

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LATEST SHOW | Monday, July 3, 2017

The Tahoe Daily Tribune, Jonah M. Kessel / AP Photo

Science And The Fourth Of July

Happy Birthday, America! To celebrate the holiday, we dig into the science that makes fireworks sparkle, flags durable, and hot dogs delicious. Plus, what brain researchers are learning about the pursuit of happiness and feelings of patriotism.