Janine Herbst

And Pierre's Emily Fang reports.

Wall Street is closed tomorrow in observance of the Martin Luther King Jr.

holiday.

This is NPR News.

More cities are turning to artificial intelligence to help address homelessness, using data and predictive algorithms to try to stop it before it starts.

NPR's Windsor Johnston reports.

In southern Spain, at least 20 people are dead after two high-speed trains collided tonight.

Officials say one of the trains derailed and then jumped onto the track of a train coming in the opposite direction, hitting that oncoming train.

Dozens are injured.

Officials say the accident happened in a hard-to-reach area and that local residents were helping people on the trains with blankets and with water.

So far, there's no word on the cause of the accident.

Asian markets are trading slightly lower at this hour.

The Asia Dow is down about one-tenth of a percent.

I'm Janine Herbst, NPR News in Washington.

Live from NPR News in Washington, I'm Janine Herbst.

The Department of Justice says it's not investigating the U.S.

Immigration and Customs Enforcement agent who shot and killed a woman in Minneapolis earlier this month.

Earlier this week, the DOJ opened an investigation into the top lawmaker in Minnesota.

NPR's Luke Garrett has more.

President Trump is escalating his crusade for the U.S.