The Washington Post has opened up an enormous DEA database that charts the course of every pain pill in the country through 2012. The Post's investigations editor Jeff Leen says more than 100 local news outlets have conducted reporting using the information. Brian Stelter talks with Leen about this cooperative approach; what the data reveals; and what stories still need to be told about the opioid epidemic.To learn more about how CNN protects listener privacy, visit cnn.com/privacy

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