Mark Memmott

Mark Memmott is NPR's supervising senior editor for Standards & Practices. In that role, he's a resource for NPR's journalists – helping them raise the right questions as they do their work and uphold the organization's standards.

As the NPR Ethics Handbook states, the Standards & Practices editor is "charged with cultivating an ethical culture throughout our news operation. This means he or she coordinates regular training and discussion on how we apply our principles and monitors our decision-making practices to ensure we're living up to our standards."

Before becoming Standards & Practices editor, Memmott was one of the hosts of NPR's "The Two-Way" news blog, which he helped to launch when he came to NPR in 2009. It focuses on breaking news, analysis, and the most compelling stories being reported by NPR News and other news media.

Prior to joining NPR, Memmott worked for nearly 25 years as a reporter and editor at USA Today. He focused on a range of coverage from politics, foreign affairs, economics, and the media. He reported from places across the United States and the world, including half a dozen trips to Afghanistan in 2002-2003.

During his time at USA Today, Memmott, helped launch and lead three news blogs: "On Deadline," "The Oval" and "On Politics," the site's 2008 presidential campaign blog.

After an investigation that lasted two years, the House Ethics Committee has cleared Democratic Rep. Maxine Waters of charges that she tried to influence regulators when a bank that her husband owns stock in went looking for a federal bailout in 2008.

Virginia Republican Bob Goodlatte, acting chairman of the ethics panel, announced the decision this morning.

It's a "now familiar global ritual," as The Associated Press says: Apple fans are lining up today at stores "from Sydney to Paris to pick up the tech juggernaut's latest iPhone."

That would be the iPhone 5, which the company unveiled earlier this month.

The last leg of space shuttle Endeavour's flight to its retirement home in Los Angeles began at 8 a.m. Pacific time today, NASA says.

And the space agency has put together a timetable for Endeavour's flybys that will give folks from San Francisco to Southern California a chance to see the shuttle aboard the jumbo jet that's carrying it to L.A.

Update at 4:25 p.m. ET. Touchdown:

As Defense Secretary Leon Panetta notes that the last of the 33,000 so-called surge troops who were added to the U.S. force in Afghanistan last year have now left the country, there's this interesting news:

(Check below for updates.)

Tens of thousands of people are protesting in all of Pakistan's major cities today, NPR's Jackie Northam reports from Islamabad, as those who oppose U.S. policy in the region continue to use outrage over an anti-Islam video to whip up anti-American sentiment.

There are also reports of new protests in other Muslim nations, including Bangladesh and Malaysia.