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As cases of a worrisome respiratory virus continue to pop up in the Middle East, scientists who study it in the U.S. are struggling to understand how they'll be affected by a government moratorium on certain kinds of experiments.

Bans on same-sex marriage in Michigan, Ohio, Kentucky and Tennessee were confirmed by a federal court Thursday, in a ruling that provides yet another shift in the legal fight over the issue.

The 2-1 decision handed down by the Court of Appeals for the 6th Circuit comes after the four states had argued this summer that their voters had the authority to decide whether to ban marriage between a same-sex couple.

It's a record most Alaskans might wish they could give back: The Center for Public Integrity calculates that KTUU TV in Anchorage ran more U.S. Senate ads this cycle than any other television station in the country — 12,300 in all.

Those Senate spots made up the bulk of the 13,400 political ads since January. KTUU General Manager Andrew MacLeod says 2014 was the the station's busiest year ever. By contrast, off-year 2013 was relatively light.

What's in your home, always on, ready to listen to you and constantly adapting to the way you talk? Why, it's Amazon's Echo speaker. Think a less portable Siri or Google Now, but hands-free.

Are you ready to bring an eavesdropping device that's connected to the cloud into the privacy of your abode?

The symptoms of the flu are familiar: fever, chills, cough, congestion, feeling very, very tired. If you're a healthy adult under 65, you'll most likely recover in a week or two.

But for those older than 65, things can get worse fast, says Dr. H. Keipp Talbot, an infectious disease specialist at Vanderbilt University.

Airlines are paying less for jet fuel these days. But don't expect that price drop to translate into Thanksgiving travel bargains for you.

Rather than cut fares, airlines are turning fuel savings into cash for acquiring aircraft, upgrading software, rewarding workers and attracting long-term investors, according to John Heimlich, chief economist for Airlines For America, A4A, a trade group.

Two sources familiar with the process tell NPR that Loretta Lynch, the top prosecutor in Brooklyn, could be nominated by President Obama as attorney general in the coming days.

Lynch is the lead federal prosecutor in a district that serves 8 million people. But outside of law enforcement circles, this daughter of a preacher is not widely known. Friends say that's because Lynch prefers to let her cases speak for themselves.

Evolution has shaped every part of the body, and that includes our private parts. New research published this week sheds light on how the penis evolved and how it forms in different animals.

The research might also one day help illuminate a medical mystery: Birth defects of the penis have risen sharply in recent decades, and nobody is sure why.

Penises weren't necessary when our early ancestors lived in the ocean. A female could lay eggs, and a male could just swim by and excrete some sperm. It would all mix and fertilize in the water.

Some 2,000 Harvard undergraduates, as well as some faculty, were photographed in lecture halls at the school last spring as part of a university study into student attendance. Harmless enough, right? Well, those photographs were taken without those students' knowledge or permission. And that has some people upset.

Daniel Luria raps on the tall metal door of a home in Jerusalem's Silwan neighborhood, which is predominantly Palestinian. Luria is with the Jewish settler group Ateret Cohanim.

One rap and a small window pops open. Luria identifies himself. Soon the door opens too.

Inside sit armed security guards. Israeli police, on a break from patrolling the neighborhood, are there as well. A large screen shows multiple feeds from security cameras around the building. One Israeli flag flies over the roof. Another hangs from the railing of a small balcony.

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