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Human viruses are like a fine chocolate truffle: It takes only one to get the full experience.

At least, that's what scientists thought a few days ago. Now a new study published Thursday is making researchers rethink how some viruses could infect animals.

A team at the U.S. Army Medical Research Institute of Infectious Diseases has found a mosquito virus that's broken up into pieces. And the mosquito needs to catch several of the pieces to get an infection.

Enormous trucks from all over the country are rolling down highways toward Baton Rouge, La.

When they get to town, their task is to clear neighborhoods where streets are lined with trash from last week's massive flood.

Baton Rouge contracted with DRC Emergency Services to handle disaster response when the floods began last week. It started out rescuing people in boats, and now that the boats are docked, trucks are coming in to handle the cleanup.

Imagine you're a teenager in Beijing in the 1960s and '70s, during the Cultural Revolution. Everything that's deemed Western and bourgeois is banned — so listening to a 78 rpm recording of Beethoven's Fifth Symphony, powerfully transformative as it might be, is off limits.

The messaging service WhatsApp is changing its privacy policy for the first time since being bought by Facebook in 2014. The app will begin sharing some of its data and phone numbers with the social network. It will also start testing how businesses, too, can talk to its users, for instance by offering flight or shipping or banking notifications.

They've known each other for only a few months, but this love story between an Australian ultramarathoner and a Chinese stray dog has seen extraordinary highs and lows.

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In a speech Thursday in Reno, Nev., Hillary Clinton argued that Donald Trump is "helping a radical fringe" — the alt-right — take over the Republican Party.

"From the start, Donald Trump has built his campaign on prejudice and paranoia. He's taking hate groups mainstream and helping a radical fringe take over one of America's two major political parties," she said. "His disregard for the values that make our country great is profoundly dangerous."

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Tribute: The Man Who Led The War To Kill Smallpox

11 hours ago

"Anxious, pleading, pock-deformed faces; the ugly, penetrating odor of decaying flesh; the hands, covered with pustules, reaching out, as people begged for help .... And there was no drug, no treatment that we could give them."

Trust the Italians to meet disaster with food.

While nobody is making light of Wednesday's earthquake that struck Amatrice, a small town in the Appenine mountains about 70 miles as the crow flies from Rome, several independent efforts have sprung up to use the town's signature dish — spaghetti all' amatriciana — to help relief efforts.

Tesla Motors moved a step closer in its bid to buy SolarCity after federal regulators said the $2.6 billion deal doesn't present antitrust concerns.

Tesla announced plans to purchase the solar panel installer earlier this month, and Reuters says the Federal Trade Commission quickly signed off "because the merging companies have few or no overlaps."

NPR's Jeff Brady has more on the deal:

"Tesla is pursing the acquisition because on top of building cars, the company says it wants to produce the renewable energy that could power them.

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