David Schaper

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STEVE INSKEEP, HOST:

Copyright 2017 NPR. To see more, visit http://www.npr.org/.

ARI SHAPIRO, HOST:

If you're one of the many who text, read email or view Facebook on your phone while driving, be warned: Police in your community may soon have a tool for catching you red-handed.

The new "textalyzer" technology is modeled after the Breathalyzer, and would determine if you had been using your phone illegally on the road.

Chicago police have now arrested two suspects in the brutal sexual assault of a 15-year-old girl that was streamed on Facebook Live. Both of those charged in the attack are teenage boys, ages 14 and 15, and police continue to look for more accomplices.

About 40 people may have watched the rapes on Facebook as they happened, but none of them reported the crimes to the police. That's raising ethical and legal questions about those who witnessed the crime, including whether they can be charged for their inaction.

It's the oldest and most basic form of transportation — walking — and more people are doing more of it to get fit or stay healthy. But there's new evidence today that even walking across the street is getting more dangerous.

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