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Cities are defined by their skylines — while Paris is composed mostly of low-rise apartment buildings, New York is a city of tall office towers. But London is a city in transition. On Wednesday, Boris Johnson, the mayor of the British capital, attends a "topping out" ceremony for one of London's latest skyscrapers in a city where tall buildings cause a lot of controversy.

Until recently, London has been a low-rise city.
 Even now, a 12-story building is considered rather tall.
 But a spate of new skyscrapers is raising questions about the kind of city London should be.

Legislative battles are being fought all over the country over whether or not to let home-schooled students play on public high school teams.

Roughly half of U.S. states have passed laws making them eligible to play on the teams. Advocates have dubbed them Tim Tebow bills, after the NFL quarterback who was home-schooled when he played on a high school team.

But an attempt by Indiana to find a middle ground may not have solved the problem in that state.

Somewhere In The Middle

This week Audie Cornish travels to Birmingham, Ala., to revisit some of the stories that shaped that city and the nation in the summer of 1963. Today she talks with Hank Klibanoff, co-author of The Race Beat about how the newspapers covered the civil rights struggle fifty years ago.

Whether it's a free upgrade on a hotel room or skipping ahead in the check-in line, many businesses give preferential treatment to some customers, hoping to make them more loyal. The practice often works — but a new study suggests that when we get perks we didn't earn, negative feelings can result. And they can make a surprise deal a little less sweet.

Six former employees and one contractor say Bank of America's mortgage servicing unit consistently lied to homeowners, fraudulently denied loan modifications and offered bonuses to staff for intentionally pushing people into foreclosure, according to a Salon.com report.

As protests against the Turkish government enter their third week, activists are taking increasingly creative measures to maintain their momentum.

You have to wonder if President Obama ever thought, when he first ran for the White House, that he would need to defend himself from accusations his presidency would be a mere extension of his Republican predecessor.

But there he was with journalist Charlie Rose having to explain why his approach to national security wasn't really like that of President George W. Bush and Vice President Dick Cheney.

Robert Siegel and Melissa Block read emails from listeners about Mozart's violin and the price of potatoes.

Christine Porter is hooked on the MyFitnessPal app. In October, after deciding to lose 50 pounds, Porter started typing in everything she eats, drinks and any exercise she gets.

"This is my main page here," says Porter. "It's telling me I have about 1,200 calories remaining for the day. When I want to record something I just click the 'add to diary' button. I'm on it all day either through my phone or through the computer."

She says she's lost 42 pounds in nine months.

Women in America's armed services will have new options for what units they can join in coming years, the Pentagon says. The military said in January that it will end its combat exclusion that set a minimum size for units in which women could be deployed; the limit kept many women away from front-line combat units. The shift means women could join elite forces such as the Army Rangers and Navy SEALs.

On Monday we told you about allegations that America's potato growers had banded together in a price-fixing Potato Cartel.

In the past decade, Mexico's tech industry has flourished, growing three times faster than the global average. Most of that growth has been fueled by demand from the United States. But as Mexico's startups strive to make it in foreign markets, they say they need more engineers and ways to finance their growth.

Federal regulators are dropping plans to tightly control a procedure that is becoming increasingly popular for treating people stricken by life-threatening infections of the digestive system.

The Food and Drug Administration says the agency will exercise enforcement discretion and no longer require doctors to get the agency's approval before using "fecal microbiota for transplantation."

The United States and Europe stepped up cooperation on security issues after Sept. 11, 2001. But that doesn't mean they agree on everything. The latest point of friction: What are the rules when it comes to privacy rights?

The revelations about the National Security Agency's surveillance programs not only touched off a ferocious debate in the U.S. but also struck a nerve in Europe.

Harold Koh, who was a legal architect for President Barack Obama's drone policies, criticized the administration's lack of transparency on its use of drones. In a speech at Oxford University, the former legal adviser for the State Department suggested the U.S. "discipline drones."

Nearly half of the 7,000 languages spoken in the world are expected to vanish in the next 100 years. One of them is Athabaskan, a language of the Siletz tribe in the Pacific Northwest. Bud Lane, vice chairman of Siletz tribal council, explains the importance of language diversity.

Administration officials defended the government's surveillance programs before the the Permanent Select Committee on Intelligence today.

Twelve years after the war began, Afghanistan's president announced Tuesday that Afghan forces officially assumed control of security for the country. U.S. and NATO troops will remain until the 2014 deadline, but the Afghan military is now expected to fight without NATO support.