On Monday’s NewsHour…

BY newsdesk  August 23, 2010 at 4:14 PM EDT

MILLIONS OF BAD EGGS | A nationwide salmonella outbreak has led to more than half a billion eggs (equal to 41.6 million cartons of 12) to be recalled. So far, at least 1,300 people have reported cases of salmonella. Jeffrey Brown speaks with food safety expert Caroline Smith DeWaal and journalist Elizabeth Weise about the latest on the investigation and how to prevent future contamination.

HUMANITARIAN CRISIS IN PAKISTAN | As humanitarian aid begin to flow into flood-ravaged Pakistan, the north is barely recovering from the fighting between the Taliban and Pakistan government. Special correspondent Saima Mohsin reports from the Swat Valley on the humanitarian crisis and American Refugee Committee CEO Daniel Wordsworth assesses the aid effort.

PRIMARIES HEAT UP IN FOUR STATES | Primary contests are less than 24 hours away in four states: Arizona, Florida, Vermont and Alaska. Hot-button issues such as immigration will be a focal point as well as economic spending. Gwen Ifill previews the primary contests with professors Susan MacManus of the University of South Florida and Bruce Merrill from Arizona State University.

RESCUE EFFORTS IN CHILE FOR TRAPPED MINERS | In Chile, 33 miners trapped for 17 days were found to be alive, but they face months more underground before they can be rescued. Matt Craze of Bloomberg News updates the rescue efforts.

PHOTO ESSAY OF NEW ORLEANS, POST KATRINA | Getty Images photographer Mario Tama shares some images he has captured of the Crescent City in the five years since Hurricane Katrina tore through.

Monday’s anchors are Gwen Ifill and Jeffrey Brown. Hari Sreenivasan has the day’s other top news stories and look at Web features. On The Rundown, Gwen Ifill and Judy Woodruff talk politics on The Political Checklist. Special correspondent Jeffrey Kaye reports from Islamabad on the Pakistan floods. Also, Margaret Warner asks for your questions about the road ahead for Iraq as the U.S. ends its combat mission.

We hope you’ll join us.