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The legal battle between Republican lawmakers and Attorney General Eric Holder over access to documents in a gun scandal could take months, if not years, to resolve.

But one man has already been sifting through secret emails about the operation known as Fast and Furious. He's Michael Horowitz, the Justice Department's new watchdog.

The southern African nation of Botswana has one of the highest rates of HIV in the world. Nearly 25 percent of all adults in the country are infected with the virus. Only the nearby kingdom of Swaziland has a higher rate.

But Botswana is also remarkable for its response to the epidemic. It has one of the most comprehensive and effective HIV treatment programs in Africa. Transmission of HIV from infected mothers to their fetuses and newborn babies has been brought down to just 4 percent.

Researchers are studying the ability of beneficial micro-organisms - or probiotics - to treat a range of conditions from eczema to inflammatory bowel disease. And the idea that "good" bacteria are healthy for us is gaining traction.

But the science is tricky.

The biggest scandal in the world right now has nothing to do with sex or celebrities. It's about an interest rate called LIBOR, or the London Interbank Offered Rate.

Most Americans probably never heard of LIBOR. When I first moved to New York, I hadn't. Back then, I could barely afford my apartment and got an adjustable rate mortgage. And so I wondered: When my rate adjusts, how will I know how much I'll be paying?

I searched through all the documents and it was right there — LIBOR. I would be paying a few percentage points above whatever LIBOR was.

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STEVE INSKEEP, HOST:

Good morning. I'm Steve Inskeep.

It is definitely wrong to hit and run, but it's a little impressive that a high school student was hit and kept running. Anaheim, California police say a high school cross country team was running when a turning car whacked one of the runners. The young woman was apparently determined, because she got backed up and ran away. The driver called after her to stop, stayed where he was and called police. The runner was eventually treated and suffered only minor injuries.

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LINDA WERTHEIMER, HOST:

Good morning. I'm Linda Wertheimer. To kick her 10-year habit, Tori is leaving home for a small island - theoretically, a no-smoking island. Home is an Indonesian zoo. Tori is an orangutan. The Guardian reports she learned to smoke imitating visitors who tossed cigarette butts into her cage. Her non-smoking orangutan roommate does what he can, stamping out burning butts before she can get to them. It's MORNING EDITION. Transcript provided by NPR, Copyright National Public Radio.

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LINDA WERTHEIMER, HOST:

Three weeks from today, the 2012 London Summer Olympics begin. London will show off its cathedrals and castles, it's parliament and palaces, all that is splendid in one of the world's greatest cities. There is a seedy side of London, however, one that Olympic organizers presumably will not present. That is where we'll be going today with this encore presentation from our Crime in the City series.

Mystery writer Mark Billingham took reporter Vicki Barker to some of the places that inspired his dark twisted thrillers.

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STEVE INSKEEP, HOST:

And today's last word in business takes us to London, where Europe's new tallest building has been inaugurated. It's called the Shard. Maybe that's because it sort of looks like a giant shard of glass, 1,016 feet tall. It stands out in a city with a relatively low skyline. It towers over the Tower of London, and the Shard brings many metaphors to mind.

The Planet Money team digs into the rate-setting scandal engulfing the British bank Barclays. Emails reveal bank employees were shockingly casual and explicit in their communications about manipulating one of the key financial benchmarks in the global economy.