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Copyright 2016 NPR. To see more, visit NPR.

Copyright 2016 NPR. To see more, visit http://www.npr.org/.

Copyright 2016 NPR. To see more, visit NPR.

Copyright 2016 NPR. To see more, visit NPR.

Copyright 2016 NPR. To see more, visit http://www.npr.org/.

The auto industry is watching to see if Tesla — which has its roots in the tech world of Silicon Valley — can pull off its goal of mass producing cars.

The goal hit a road bump in May when Tesla had its first fatality in a vehicle using Autopilot, a feature it offers that allows the car to do a lot of the driving.

It's supposed to be an assist: Before you engage it, it warns you not to take your hands off the wheel.

Several times a month, Jessica Wen, a pediatrician specializing in liver diseases, has a teenager show up at her clinic at the Children's Hospital of Philadelphia with an unexpected diagnosis: hepatitis C.

Hepatitis C virus, or HCV, is the most common bloodborne infection in the U.S. and a leading cause of liver failure and cancer. Injection drug use is a common risk factor, as is receiving a blood transfusion before 1992. But some of the teens Wen sees picked up the illness another way: at birth, from their mothers.

For Michelle Obama, this election is about the kids. On the opening night of the Democratic National Convention, the first lady wove her vision for the next generation with her hope for the next president.

"This election, and every election, is about who will have the power to shape our children for the next four or eight years of their lives," she said, adding that Hillary Clinton is the only candidate "who I trust with that responsibility."

Thank you so much. You know, it's hard to believe that it has been eight years since I first came to this convention to talk with you about why I thought my husband should be President. Remember how I told you about his character and conviction, his decency and his grace — the traits that we've seen every day that he's served our country in the White House.

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