People in areas devastated by tornadoes in the southeast United States last week still are looking for hundreds of missing people as they try to reconstruct their lives and communities. Here is a look at this and other stories that CNN plans to follow this week:
Hundreds missing in Tuscaloosa alone
About 148 twisters Wednesday left a swath of destruction across 13 states, killing more than 335 people in six states, including 250 people in Alabama alone.
Rescuers and volunteers have descended on the region, including in Tuscaloosa, Alabama, where the mayor says hundreds of people remain unaccounted for and many more have been left homeless. At least 39 people were killed in Tuscaloosa, a university city struck by a massive tornado Wednesday.
Amazing stories of survival are coming in, as are reminders that the numerous flattened communities have a long road of recovery ahead: Nearly a half million customers in Alabama still were without power on Sunday.
Levee battle: Flood rural Missouri or risk losing Illinois city?
The U.S. Army Corps of Engineers could soon blow up a levee on the swollen Mississippi River in an effort to save the small Illinois city of Cairo from an apparently imminent flood. But the move to ease the pressure on Cairo would flood Missouri farm communities instead, and Missouri officials on Sunday asked the U.S. Supreme Court to stop the move.
As of 3 p.m. CT Sunday, the gauge at Cairo - where the Ohio River meets the Mississippi River - stood at 59.97 feet, a record level. Flood stage is 40 feet, according to the National Weather Service. Barges containing explosives have been moved from Kentucky to the Birds Point-New Madrid levee - a sign to residents that the breach is imminent.
The move would flooding 130,000 acres of Missouri farmland but save Cairo, a city of about 2,800, and ease pressure on the entire Mississippi River and Tributaries Project. About 90 families who live in the farmland area have already been evacuated, Missouri officials have said.
Engineers have warned that should the rising waters of the Mississippi River overwhelm the entire flood control project, it could deluge cities, destroy crops, destroy businesses and paralyze river transportation. The injunction request has been assigned to Justice Samuel Alito, according to the U.S. Supreme Court's website.
Libyan government's forces pounding rebel positions
Forces loyal to Libyan leader Moammar Gadhafi have stepped up their shelling of rebel positions in Benghazi and Misrata after the government claimed one of Gadhafi's sons was killed in a NATO airstrike.
An eyewitness reported significant damage and some casualties in Misrata, a city that has been contested since a rebel uprising against Gadhafi began in February.
The Libyan government said Sunday that Gadhafi's son, Saif al-Arab Gadhafi, and three of Gadhafi's grandchildren died Saturday in a strike that destroyed the son's home in Tripoli; CNN could not independently confirm the report. NATO began bombarding Libya on March 19, after the U.N. Security Council approved a resolution authorizing any means necessary to protect civilians demanding the end of Gadhafi's nearly 42-year rule.
Prince Charles goes to Washington
It's been an eventful few days for the United Kingdom's Prince Charles. Last week he saw his son married in a small family affair that you may have heard about. On Tuesday, he'll be in Washington to kick off a three-day visit to the United States. In Washington, he'll meet with President Barack Obama and keynote a conference on sustainable agriculture. He'll also make stops in New York and Philadelphia later in the week.
Endeavour crew in waiting mode
NASA this week will be addressing a power problem that stopped plans to launch space shuttle Endeavour last week and this Monday.
The shuttle - which is about to embark on its final mission - will not launch any earlier than May 8, NASA said. Endeavour's final launch was delayed Friday because of concerns about the shuttle's heating system. A subsequent plan to launch Monday also was scrapped.
U.S. Rep. Gabrielle Giffords - the wife of Endeavour commander Mark Kelly - is expected to pause her rehabilitation in Houston to see the launch. Giffords, who was shot in the head in a January assassination attempt in Arizona, went to Florida for the expected launch last week but returned to Houston on Sunday because of the delays.
This is NASA's next-to-last scheduled shuttle launch, with the space agency retiring the whole fleet later this year.
Congress expected to talk gas prices, debt ceiling upon return
The U.S. Congress returns to work this week after a two-week break. Reacting to rising gas prices, legislators have signaled that they'll take up energy-related legislation. House Republicans plan this week to vote to increase oil drilling in the United States, and Senate Democrats say they'll take up legislation that would end taxpayer subsidies to oil companies - money that Democrats say would be better used to develop energy alternatives.
Lawmakers also are expected to continue discussing the nation's debt ceiling. U.S. debt is expected to hit the country's $14.3 trillion ceiling this month, though congressional leaders say the Treasury can take steps to put off the deadline until early July. Congressional Republicans have been saying for weeks that they will not vote to raise the debt ceiling without conditions controlling federal spending.