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You need some water. You open the faucet. And you wait. And wait.

You twiddle your thumbs. You wait for the first drop to come out of the tap so you can get water for drinking, cooking and cleaning. You wait for hours so that when the water comes, you're ready.

A lot of the time, nothing comes out.

That's the way water works — or, rather, doesn't work — in many parts of the world.

But in India, a group of young entrepreneurs based in Bangalore have figured out how to let people know when there's water on its way. And it's as simple as sending a text message.

One of history's greatest engineering feats is one you rarely hear of. It's the Inca Road, parts of which still exist today across much of South America.

Back in the day — more than 500 years ago — commoners like me wouldn't have been able to walk on the Inca Road, known as Qhapaq Ñan in the Quechua language spoken by the Inca, without official permission.

Donald Trump's Republican presidential campaign continues to lead in the polls, and this week Trump hired Sam Clovis to be his national campaign co-chairman. A week ago, Clovis worked for Republican rival Rick Perry. Clovis, a former radio talk show host and college professor, is an Iowan who has run for state treasurer and the U.S. Senate there. He Talked to NPR's Scott Simon from Sioux City, Iowa.

To hear the full conversation, click the audio link above.

Interview Highlights

On why he left Perry to work for Trump

In one of several high-profile cases that have drawn international criticism, a Russian military court has sentenced a Ukrainian film director to 20 years in prison for allegedly plotting terrorist attacks in Crimea.

The cases have provoked protests from human rights groups and Western governments, including the United States.

Tropical Storm Erika is drenching the Dominican Republic and Haiti, but the latest National Hurricane Center forecasts suggest that moving over the rugged island may leave the storm too disorganized to reform and threaten Florida.

This week on Wall Street, investors experienced thrills, chills, tears and giggles as their investments plunged, soared, dropped, rose, dipped, moved sideways — and then ended about where they started.

On Friday, the Dow Jones industrial average inched down 12 points to 16,643 for the day, ending a bit higher than last Friday's 16,459 close.

So if you just got back from spending a week on a tiny desert island with no smartphone, you might look at the Dow's close and think it was a pretty tame week.

You would be very, very wrong.

This has been one of the worst — and most expensive — wildfire seasons ever in the Northwest, where climate change and a history of suppressing wildfires have created a dangerous buildup of fuels.

With fires burning hotter and more intense, there are renewed calls to change how the federal government pays to fight the biggest fires.

"These large and intense fires are a natural disaster in much the same way a hurricane or a tornado or a flood is," U.S. Agriculture Secretary Tom Vilsack says. "And they ought to be funded as such through the emergency funding of FEMA."

Al Arbour, who set an NHL record by coaching 1,500 games, has died at age 81. As the head coach of the New York Islanders, he led the team to four Stanley Cup championships in 19 seasons. He also won four NHL titles as a player.

"Al will always be remembered as one of, if not the, greatest coaches ever to stand behind a bench in the history of the National Hockey League," Islanders President and General Manager Garth Snow said, as the team announced Arbour's death Friday.

More than 1,000 square miles of wildfires are burning in Washington state. In the remote Okanogan Valley in the north-central part of the state, many cattle ranchers are scrambling to save their herds.

Ranchers in Omak, Wash., have lost animals, barns, pasture and winter haystacks to the wildfires. But some people still have their cattle, and at the town's Ag Tech Feed Store, owners Monte and Laurie Andrews are trying to help keep those ranchers in business.

#NPRreads is a weekly feature on Twitter and on The Two-Way. The premise is simple: Correspondents, editors and producers from our newsroom share the pieces that have kept them reading, using the #NPRreads hashtag. On Fridays, we highlight some of the best stories.

This week, we bring you three items.

From NPR's Jerusalem correspondent, Emily Harris:

Hundreds of Vietnam combat helicopter pilots, their families and Gold Star families planted a tree in Arlington National Cemetery on Friday to commemorate the 50th anniversary of the first U.S. combat troops entering the Vietnam War.

The group called it the largest gathering of pilots, with 1,000 expected, says Bob Hesselbein, president of the Vietnam Helicopter Pilot Association, which is holding a five-day meeting in Washington that ends on Saturday.

One week before the school's football season starts, the University of Illinois has fired head coach Tim Beckman, saying a review had found "efforts to deter injury reporting and influence medical decisions that pressured players to avoid or postpone medical treatment and continue playing despite injuries."

Illini Director of Athletics Mike Thomas fired Beckman on Friday. A school statement says the decision was made "in the best interests of student-athletes."

Doctors without Borders / Médecins Sans Frontières (MSF) is seeking legal action against the producers of a new Bollywood film that it says portrays a worker for a "confusingly similar" aid organization who assists in tracking down and killing the head of a Pakistani extremist faction.

Wearing a green Dartmouth College jersey, the newest player on the school's football team readies for action during a preseason practice. The whistle blows, he makes his move and then is thrown to the ground by a teammate's crushing tackle. This happens again and again and again, but every time, the new player pops right back up, completely unhurt.

This player is an MVP — a "Mobile Virtual Player," that is.

In the 10 years since Hurricane Katrina, the U.S. Army Corps of Engineers has nearly completed one of the world's most remarkable hurricane protection systems to encircle New Orleans. Locals say their low-lying city finally has the storm defenses it should have had before Katrina, which killed hundreds and caused billions in property losses.

Companies have long had to disclose what their CEOs make, but soon, for the first time, large companies will have to disclose how salaries at the top compare to their median compensation level for employees worldwide. It's a rule the Securities and Exchange Commission adopted as required by the Dodd-Frank financial law.

Copyright 2015 NPR. To see more, visit http://www.npr.org/.

Copyright 2015 NPR. To see more, visit http://www.npr.org/.

Transcript

AUDIE CORNISH, HOST:

Copyright 2015 NPR. To see more, visit http://www.npr.org/.

Transcript

AUDIE CORNISH, HOST:

NPR's Wade Goodwyn sends this postcard on a story that's getting attention in Dallas.

A 20-year member of Congress indicted on racketeering charges is challenging restrictions on his ability to meet with colleagues as "an undue and unnecessary burden...that is effectively impairing his ability" to do his job.

Last month, a federal grand jury in Philadelphia indicted Rep. Chaka Fattah, D-Penn., on conspiracy, bribery, and fraud counts for allegedly using political campaigns and nonprofit groups to cover personal expenses and evade campaign finance laws.

As promised yesterday in our post about Oxford Dictionaries' new words, here are a few of the most linguistically nimble sentences submitted by NPR readers responding to a call-out to see how many of the words they could cram into one sentence.

From Facebook, Carrie Donovan:

It has all the makings of an Indiana Jones sequel: In the final days of World War II as the Soviet army closed in on the Third Reich from the east, a train full of gold, gems and other Nazi loot was hidden in a secret underground tunnel near the present-day Polish city of Walbrzych. Seventy years later, a deathbed confession may provide the key clue to finding it.

"There are too many guns in America, and there's clearly too many guns in the wrong hands."

That's what Virginia Gov. Terry McAuliffe said to reporters in front of the WDBJ building in Roanoke, Va.

The governor, who promised to introduce gun-control legislation, was speaking two days after a gunman killed two journalists from that station during a live broadcast.

Yes, it's a cliche: "Yoga saved my life."

Google the phrase, and you'll get 12 million matches!

But when Walter Mugbe says it, he really means it. It's not an exaggeration. It's the truth.

With egg freezing being touted as a way for women to potentially expand future childbearing options, the viability of those eggs when they're defrosted is still relatively unknown. The latest bit of guardedly good news is a short report in JAMA indicating that frozen eggs do indeed lead to live births after IVF nearly half the time — but that the odds of a live birth are almost 20 percent higher for IVF using fresh eggs.

Updated at 2:40 p.m. ET

Former President George W. Bush, whose legacy was marred by the federal government's response to Hurricane Katrina, visited New Orleans today to mark the 10th anniversary of the tragedy.

Bush and his wife, Laura, arrived Friday morning at Warren Easton Charter High School, where they met with students as well as New Orleans Mayor Mitch Landrieu and Kathleen Blanco, who was Louisiana's governor when Katrina hit in August 2005.

This presidential campaign, Donald Trump may test the maxim that if you can't say anything nice, you shouldn't say anything at all.

Before a boisterous crowd of 1,400 in Greenville, S.C., on Thursday, Trump made no apologies for criticisms he's made about his fellow GOP rivals — even if it's that tone and attitude that have taken a toll on him in at least one area of the polls — an area Trump seems to have a myopic obsession with.

A three-judge panel for a U.S. appeals court has thrown out a lower-court decision that sought to stop the NSA from continuing to collect metadata on phone calls made by Americans.

The lower court ruling had found that the practice was unconstitutional.

The National Zoo in Washington, D.C., announced Friday that the surviving cub of giant panda Mei Xiang is a boy.

Genetic testing also showed that he was sired by China's panda, Tian Tian, the zoo tweeted.

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