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.

Update at 6:08 p.m. ET. USA Today's On Politics blog reports that both Sears and Allstate are distancing themselves from Limbaugh as well. Both firms said their media buying firms bought space on the show, today, but they have instructed them not to continue.

There's more sad news from the stretch of five states across the Midwest and South that were slammed by tornadoes on Friday.

Sandra Fluke, the Georgetown University law student who has become a "poster child" for Democrats since Republicans wouldn't let her testify at a House hearing about President Obama's policy on contraception, said today she was stunned and outraged Wednesday when conservative radio broadcaster Rush Limbaugh called her a "slut" and "prostitute" on his nationally syndicated show.

A California woman's nearly $168 million award from a jury is "believed to be the largest for a single victim of workplace harassment in U.S. history," the Los Angeles Times reports.

Among the reports of more deadly violence in Pakistan today — about 70 people were killed in three incidents, DAWN reports — is word that about 20 of the deaths were the result of one militant group attacking another.