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The Consumer Technology Association forecasts that 400,000 drones will be sold in the United States this holiday season. That's not to mention the commercial drones being developed by Google (now known as Alphabet), Amazon, Wal-Mart and others.

If you've ever been vaccinated, you may have seen the nurse head out of the room to go to the refrigerator to retrieve your injection. That's because most vaccines must be refrigerated during travel and storage or they lose their effectiveness.

Vaccines typically need what's known as a "cold chain." From the point of manufacture to the place where they're used, they need to be kept within a narrow temperature range, typically between 35 and 46 degrees Fahrenheit.

French Finance Minister Michel Sapin told reporters Monday that the government will move to more rigorously regulate prepaid debit cards, which he said were used in preparation for the Nov. 13 attacks in Paris. He said the changes were necessary to restrict terrorists' ability to transfer and access money while remaining anonymous.

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The U.S. drug giant Pfizer and its smaller rival Allergan have agreed to merge, creating the world's biggest pharmaceutical company by sales.

The $160 billion deal is the largest example so far of a corporate inversion, in which a U.S. company merges with a foreign company and shifts its domicile overseas in order to lower its corporate taxes.

Brussels will remain in a heightened state of security until at least Monday, the country's prime minister Charles Michel said.

Schools and universities will reopen Wednesday and the subway system will begin reopening on Wednesday too. Still, said Michel, the country is still facing a "serious and imminent" threat.

Since Sunday, authorities have been carrying out raids in an attempt to stop what they suspect is planned Paris-style terrorist attack on Belgium's capital city.

Mauricio Macri, the former mayor of Buenos Aires, will be the next president of Argentina, after a close election that brings the 12-year rule of the Peronist Party to an end.

As NPR's Lourdes Garcia-Navarro reports, Macri's win sways the country to the right. Lourdes filed this report for our Newscast unit:

"This is a politically polarized country and it was a hotly contested race. For the first time ever in Argentina's history there was a second round of voting in a presidential election.

The two births that would change everything for Taylor Delhagen were due to occur 24 hours apart. If all went according to plan, his school would come into being one day and his first child would arrive the next.

The baby boy's impending arrival had Delhagen contemplating the gravity of his role as a teacher opening a charter high school in one of New York City's poorest neighborhoods: Brownsville, Brooklyn.

Remember the headlines a few weeks back, when the World Health Organization categorized red and processed meats as cancer-causing?

Turns out, the techniques you use to prepare your meat seem to play into this risk.

There's something regal about Abdi Ismail. The white-bearded paterfamilias sits cross-legged on a mattress, a scarf wrapped turban-like round his head, his children and chickens keeping a respectful distance.

Ismail's extended family lives in a tent stamped with U.N. logos. He's proud they're here.

"We didn't leave our mountain," he says. "We stayed here and we fought."

They've been eking out an existence on the rugged slopes of Iraq's Mount Sinjar since ISIS took their village of Tal Azer in summer last year.