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The Justice Department late Thursday announced that it has asked the Supreme Court to overturn a lower court ruling that prevents President Trump from ending the Obama-era program that shields certain young undocumented immigrants from deportation.

That program, Deferred Action for Childhood Arrivals, or DACA, also grants work permits to about 700,000 immigrants brought to this country illegally by their parents.

The prime minister of New Zealand, Jacinda Ardern, has announced that she is pregnant with her first child and will take a six-week break from her official duties to give birth.

In what may be a groundbreaking move, Ardern's plan follows what was already shaping up to be a different approach to both political power and motherhood.

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KELLY MCEVERS, HOST:

Attention Drivers: Many of those those freeways you're using may not be free for long. Several states are opening new toll roads this year and rates on many existing turnpikes and tollways are going up.

And the number of toll roads is likely to increase, as the Trump administration's infrastructure plan may force many more states to use them to fund long-standing transportation needs

There was a time when saying you lived in Portland, Ore., would get a response like, "That's above California, right?" Now, people not only know where the city is but also inevitably ask, "Is it just like the show?"

A tablespoon of soil contains billions of microscopic organisms. Life on Earth, especially the growing of food, depends on these microbes, but scientists don't even have names for most of them, much less a description.

That's changing, slowly, thanks to researchers like Noah Fierer, at the University of Colorado, Boulder. Fierer think microbes have lived in obscurity for too long. "They do a lot of important things for us, directly or indirectly, and I hope they get the respect they deserve," he says.

On Thursday, USA Gymnastics announced they will stop using the Karolyi Ranch — the site of many of the atrocities committed against Olympians by Larry Nassar, the team's former doctor. NPR's Kelly McEvers talks to New York Times reporter, Juliet Macur about what happens next as Nassar faces sentencing hearings this week.

Copyright 2018 NPR. To see more, visit http://www.npr.org/.

Editor's note: This report includes disturbing descriptions of abuse.

Last June, a jury found former Milwaukee police officer Dominique Heaggan-Brown not guilty of first-degree reckless homicide. Now, Heaggan-Brown is taking a plea deal over separate sexual assault allegations that led the Milwaukee Police Department to fire him.

The shooting death of Sylville Smith, a 23-year-old black man, ignited riots in the north side of Milwaukee in August 2016.

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