NPR News: NPR's Short Wave gives us the latest on black holes, sea turtles, and blood pressure

NPR's Short Wave gives us the latest on black holes, sea turtles, and blood pressure
NPR's Ari Shapiro speaks with Regina Barber and Aaron Scott of Short Wave about a black hole nearly as old as the universe, how pollution plagues sea turtles, and a simple fix to cut blood pressure.

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