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In the quest for better cancer medicines, vaccines that treat rather than prevent disease are getting lots of attention.

More than 90 clinical trials have tested therapeutic vaccines in cancer patients, but the results have been a mixed bag.

A recent study in mice suggests that changing a traditional ingredient in the vaccines could make a big difference.

The phrase "jump the shark" is coming to mind this morning. The "Harlem Shake" craze does seem to be getting to the point where it's getting out of hand.

Britain's Queen Elizabeth II was just seen leaving London's King Edward VII hospital, where she had been admitted over the weekend to be treated for symptoms of gastroenteritis.

If former NBA star Dennis Rodman's read on Kim Jong Un is correct, the CIA and State Department might be in need of a major overhaul in their assessments of the North Korean leader.

Rodman, the only American to have met and talked with Kim, appeared on ABC's This Week with George Stephanopoulos to talk about his two-day visit to North Korea last week.

As they begin the process that will lead to selection of the next pope, the Roman Catholic Church's cardinals must first decide just when to officially start deciding, NPR's Sylvia Poggioli reminds us from Rome this morning.

A young couple head to a hospital because the wife, who is about seven months pregnant, isn't feeling well. Then, tragedy strikes.

It's a heartbreaking story that is making headlines in New York City.

The grim work continues at a home near Tampa, Fla., where a man apparently died last week when a sinkhole opened up under his bedroom.

The daily lowdown on books, publishing, and the occasional author behaving badly.

President Obama plans to announce three Cabinet-level nominations Monday, including a new administrator for the Environmental Protection Agency, who could be on the hot seat in the looming battle over global warming.

Gina McCarthy, currently an assistant administrator in the wing of the EPA that regulates air pollution, is the president's pick to head the EPA.

The streets of Gaza are busy, but they are also crumbling.

Since Hamas took control of the Gaza Strip in 2007, Israel has maintained tight limits on shipments of anything that could be used for military purposes. That includes basic building materials that could be used for bunkers and rocket launching sites.

Ask businessman Ali Abdel Aal what's the toughest thing for him to find, and he'll tell you "cement and gravel."

If you're a parent, you've probably heard remarks like this during dinner: "I don't like milk! My toast is burnt! I hate vegetables! I took a bite already! What's for dessert?" It can be daunting trying to ensure a healthy diet for our children. So it's no wonder parents often resort to dinner time rules.

About 69 percent of American adults are overweight or obese, and more than four in five people say they are worried about obesity as a public health problem.

But a recent poll conducted by NPR, the Robert Wood Johnson Foundation and the Harvard School of Public Health revealed a curious schism in our national attitudes toward obesity: Only one in five kids had a parent who feared the boy or girl would grow up to be overweight as an adult.

Tax day is looming and taxpayers are scrambling to gather receipts, W-2 forms and other documents. For many, gone are the days of paper ledger books and calculators, now that there's software to figure out how much they owe.

Environmentalists have a hope.

If they can block the Keystone XL pipeline, they can keep Canada from developing more of its dirty tar sands oil. It takes a lot of energy to get it out of the ground and turn it into gasoline, so it has a bigger greenhouse gas footprint than conventional oil.

Scientists believe a little girl born with HIV has been cured of the infection.

She's the first child and only the second person in the world known to have been cured since the virus touched off a global pandemic nearly 32 years ago.

Doctors aren't releasing the child's name, but we know she was born in Mississippi and is now 2 1/2 years old — and healthy. Scientists presented details of the case Sunday at a scientific conference in Atlanta.

The hallways at Westlake High School in Maryland are just like thousands of other school hallways around the country: kids milling around, laughing and chatting on their way to class.

On a recent morning, about 30 kids took their seats in a classroom that initially seems like any other. The major difference here is that instead of a chalkboard and a lectern at the head of the class, there are two enormous flat-panel screens and thin, white microphones hanging in four rows across the ceiling.

Bright lights are part of a city's ecosystem. Think of Times Square or the Las Vegas Strip or right outside your bedroom window.

Electric lighting is ubiquitous in most urban and suburban neighborhoods. It's something most people take for granted, but appreciate, since it feels like well-lit streets keep us safer. But what if all this wattage is actually causing harm?

"We're getting brighter and brighter and brighter," warns Paul Bogard, author of the upcoming book, End of Night: Searching for Natural Darkness in an Age of Artificial Light.

Dozens of people are dead in the Pakistani port city of Karachi following a blast Sunday near a Shiite mosque.

Update at 3:16 p.m. ET Toll Rises

Authorities now say at least 37 people were killed and another 141 wounded in the blast.

Our original post:

Here's more from The Associated Press:

It was not the outcome they had hoped for, but in his first interview since losing the presidential election, Mitt Romney said he and his wife are moving on.

Speaking to host Chris Wallace on Fox News Sunday, Romney described last year's presidential race, his second attempt at serving in the White House, as a "great, thrilling experience of a lifetime."

"It didn't end the way we wanted it to, but the experience itself was magnificent," Romney said.

Both he and his wife, Ann, said they did not expect to lose to President Obama last November.

Britain's Queen Elizabeth II is in hospital where she's being treated for symptoms of gastroenteritis.

NPR's Philip Reeves is reporting on the story for out Newscast unit. Here's what he says:

In Syria's northern province of Aleppo, the war is far from over. Yet civilians are planning a dramatic gesture: an election for a civilian government.

This weekend, delegates from across the province are taking part in the first free vote outside of the control of President Bashar Assad's regime. Its location: Gaziantep, Turkey.

The Dragon has been captured. The SpaceX unmanned craft connected with the International Space Station at 5:31 a.m. ET, NASA tweeted. The spacecraft arrived a day late due to mechanical problems after Friday's launch from Cape Canaveral, Fla.

U.S. Secretary of State John Kerry walked into a chaotic situation in Egypt, the first Arab country he's visited in his new role. The country is in economic and political turmoil, and he is trying Sunday to encourage Islamist President Mohamed Morsi to open up the political process and carry out much-needed reforms. After their meeting, he announced the U.S. would release $190 million in aid to Egypt.

Kerry has also been hearing complaints from opposition figures, who have vowed to boycott upcoming elections.

Van Cliburn thawed out the Cold War.

He went to Moscow in 1958 for the first International Tchaikovsky Competition. When he sat down to play, Russians saw a tall, 23-year-old Texan, rail thin and tousle-haired, with great, gangly fingers that grew evocative and eloquent when he played the music of the true Russian masters — Rachmaninoff, Tchaikovsky, and Borodin.

Cliburn died Wednesday at his home in Fort Worth, Texas. He was 78.

A senior commander for al-Qaida's wing in North Africa has been killed, Chad's military reported on Chadian state television Saturday. NPR could not independently verify the report.

The military said troops attacked an Islamist rebel base in the mountains of northern Mali, killing several militants, including Mokhtar Belmokhtar.