Rep. David Wu, the first Chinese-American to serve in the House, announced Tuesday that he will resign, ending what seemed to be headed toward becoming another embarrassing congressional sex scandal.

The Oregon Democrat faced a House ethics investigation after allegations surfaced that he had what is being widely described as an "unwanted sexual encounter" with a teenager. The young person was the daughter of Wu's childhood friend.

The Oregonian reported:

The housing market still isn't getting better. But two key reports out today suggest it has stopped getting worse, at least for now.

The 2009 movie Avatar may have been box office magic, but for me, it was a 3-D exercise in movie theater misery. I felt so nauseated through most of the 162-minute-long running time that I failed to appreciate the vaunted visuals other viewers praised.

Facing an ethics investigation and mounting pressure from his constituents, Rep. David Wu, a Democrat from Oregon, is resigning, the AP reports.

Minority Leader Nancy Pelosi formally called for an ethics investigation, earlier this week, after allegations surfaced that Wu had a sexual encounter with a teenager in November.

Transcript

MICHEL MARTIN, host: I'm Michel Martin and this is TELL ME MORE from NPR News.

Now it's time for the Beauty Shop where we talk about a few topics that we think could use a woman's touch. Today we want to talk about a story that has captivated and appalled people on two continents, the alleged sexual assault of a hotel maid. The accused is the former head of the International Monetary Fund, Dominique Strauss-Kahn.

Christian extremist Anders Behring Breivik has confessed to committing the recent Norway attacks. Did insanity or pure evil trigger his actions? Host Michel Martin and psychiatrist Dr. Carl Bell discuss whether there's a link between extreme racism and mental illness. Bell is among the authors of The Oxford Handbook of Personality Disorders.

President Obama's approval rating among Latinos has plunged since his inauguration, says a recent Gallup poll. Yesterday, Obama spoke to the U.S.' largest Latino civil rights group. To learn about Latinos' priorities and political strategies of getting them addressed, host Michel Martin speaks with the National Council of La Raza's Janet Murguia.

The United States Postal Service announced today it is reviewing 3,700 retail locations across the country for possible closure. (A list is here.)

In a statement, Postmaster General Patrick Donahoe said customers are not using offices as much as they used to.

First in a three-part series about the long-term storage of nuclear waste

At least two dozen countries around the globe get energy from nuclear power, yet not one has been able to pull off a permanent disposal site. Finding communities willing to live with such dangerous stuff has been a big sticking point. But in Sweden, two communities have stepped up, eager to take the country's waste.

The Happy Meal is headed for a nutrition overhaul.

Bowing to pressure that its kids' meals haven't been healthful enough, McDonald's will downsize french fries and put a fresh fruit or veggie in every Happy Meal.

Apple slices have long been an option with the Happy Meal. But the problem has been that parents have to ask for them in lieu of french fries. That's about to change.