While oohing and ahhing at the powerful leaps and nimble spins on the ice at the Olympics, you may not realize you’re watching physics in action. Each jump requires a careful balance of matching the time in air to the speed and number of rotations. From spray can to ocean spray, it's time to talk about aerosols. They do play a role in climate change, but not the one you might think. There's a new urban air polluter on the block. Volatile organic compounds like wall paints and cleaning agents are becoming our cities' biggest sources of air pollution. Could UV light zap the flu bug? Scientists are looking into a way to kill the bug even before it has a chance to get into your system, and one type of UV light could be used to disable proteins in the flu virus. Subscribe to this podcast. Plus, to stay updated on all things science, sign up for Science Friday's newsletters.

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“What did the council decide on item 42?” — answered with the speaker and the moment.