For decades, teachers, managers and parents have assumed that the performance of students and employees fits what's known as the bell curve — in most activities, we expect a few people to be very good, a few people to be very bad and most people to be average.

The bell curve powerfully shapes how we think of human performance: If lots of students or employees happen to show up as extreme outliers — they're either very good or very bad — we assume they must represent a skewed sample, because only a few people in a truly random sample are supposed to be outliers.

When I went to see The Avengers the very day it was released, I texted a friend in San Francisco. It seems kind of unfair, I said, that because of the 12-hour time difference, I get to see The Avengers before you do.

Turns out I was a week off. The Avengers actually released in 39 countries around the world, including India, a week before it opens in America.

The African-American experience is reflected, right now, on the walls of the Smithsonian American Art Museum in Washington, D.C. Exuberant dancing in Chicago. Laundry on a line in the nation's capital. A girl smiling out from her father's warm jacket — all captured in photographs, paintings and sculptures from the 1920s through the 1990s.

British artist Jasmine van den Bogaerde — better known as Birdy — is probably best known for her 2011 cover of Bon Iver's "Skinny Love." The 15-year-old started playing piano at 5, began composing a few years later and won the Open Mic UK competition in 2008 at the age of 12. The win guaranteed the young artist a recording contract, but before releasing her debut, she'd already scored a spot on the U.K. pop chart with her cover of "Skinny Love," making Birdy a household name in the U.K.

Now that President Obama and GOP presidential candidate Mitt Romney are pivoting to the general election, campaign watchers are handicapping the race that counts this fall — the Electoral College.

And right now, the Electoral College map is looking better for the president than the (generally very close) national polls, says NPR's senior Washington editor, Ron Elving.

The news keeps getting worse for Spain. This week came word that the country has fallen back into recession. Meanwhile, Spain's unemployment rate is the highest in Europe. Investors are once again fleeing the country and interest rates on government debt are climbing.

The numbers coming out of Spain these days are stark. The economy contracted at a 0.3 percent rate during the first part of this year. Housing prices are down 21 percent from their peak, and unemployment is nearly 25 percent.

The prosecution at the perjury trial of baseball great Roger Clemens suffered another major setback Wednesday. One of its key witnesses, pitcher Andy Pettitte, conceded that he may have misunderstood his former teammate as saying he used human growth hormone (HGH).

Clemens is charged with lying to Congress when he testified before a House committee that he had never used performance-enhancing drugs.

A little more than a day after a committee of British parliamentarians said Rupert Murdoch was "not a fit person" to lead a major international company, the board of News Corp. said they still backed Murdoch's leadership.

NPR's David Folkenflik reports that the board issued the statement of suport unanimously.