Today the United Kingdom formally told the European Union it is leaving, after decades of membership in the 28-nation political alliance and trading bloc. The move triggers an estimated two-year divorce process that will involve many months of tough negotiations and will launch Britain on a new, uncertain path.

Addressing the House of Commons in London, Prime Minister Theresa May said Brexit is an opportunity for her country to chart a new course, unencumbered by the bureaucracy of the multilateral organization based in Brussels.

After millions of dollars of flood damage and mass evacuations this year, California is grappling with how to update its aging flood infrastructure. Some say a natural approach might be part of the answer.

All the water that poured down spillways at the Oroville Dam in northern California did a lot of damage to the area — and for miles down the river.

"It looks like a bomb's gone off," says John Carlon of River Partners, a nonprofit that does river restoration. "That's what it looks like."

A new Missouri law cuts off a line of funding to all organizations that provide abortions in the state, including hospitals.

For years, Missouri has helped low-income women pay for family planning under a Medicaid program called Extended Women's Health Services, which is funded by both the state and the federal governments.

Michael Sharp believed in the power of persuasion. The 34-year-old Kansan with the round face and a penchant for plaid shirts would walk, unarmed, deep into rebel-held territory in the Democratic Republic of Congo, sit in the shade of banana trees with rebels and exchange stories.

Inevitably, those stories would turn to the past. "Rebels love talking about the past," Michael once told me.

The U.S. Census Bureau published a list on Tuesday of more than 50 planned topics of questions for the 2020 Census and the American Community Survey.

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

KELLY MCEVERS, HOST:

The most expensive part of doing business in outer space is getting there. The private space flight company SpaceX thinks it can change all that, and it's about to face a big test of its technology.

As China prepares to impose a domestic ban on the ivory trade, a new report has found that the price of raw ivory there is plummeting.

It's good news for Africa's elephants, which have been poached by the thousands for their tusks. Many of those tusks are then smuggled to China, which has been one of the world's largest markets for the banned material.

Update 7:06 P.M. Eastern: The EPA says it's reversing course and keeping this pesticide on the market.

That's despite the agency's earlier conclusion, reached during the Obama administration, that chlorpyrifos could pose risks to consumers. It's a signal that toxic chemicals will face less restrictive regulation by the Trump Administration.

On Saturday morning a team of six aid workers from the Grassroots Education and Development Organisation in South Sudan decided to get an early start on their day.

Pages

Harmonic Vibrations

Norm Movitz plays an eclectic blend of music from a wide variety of genres on this engaging program.

Blue Grass for a Saturday Night

You'll hear the best in Bluegrass every week on Bluegrass for a Saturday Night, from the great classics of the past to the hottest new groups.

Jitterbug and Jive

Just Jazz

Just Jazz brings you jazz from the classics to the latest releases.

Vocalocity

Sunday Morning Sounds

A program of inspirational Bluegrass/Gospel music to get your week off to the right start.

Local News

    Saint Joseph's handed Missouri S&T its first loss in an extra inning contest Monday afternoon, as the 25th-ranked Pumas scored a run in the 11th inning to beat the Miners 2-1 and sweep the three-game series between the teams.  The second game of the scheduled doubleheader was cancelled on account of early morning weather as the teams agreed to play a single game after the weather cleared.