The Federal Emergency Management Agency (FEMA) may have overpaid $22 million in aid to Americans. Now it's asking for the money back.
The tornadoes that ripped through the South, especially through Alabama, have created a spike in homeless people, as tornado victims search for housing.
Officials along the Mississippi Delta are considering whether to open the floodgates, allowing water to flood farmland, to save cities from a Katrina-like disaster.
The waters of the Mississippi river are expected to crest tomorrow morning, flooding Memphis, Tennessee and the surrounding area.
Floodwaters are rising on the Mississippi, but officials believe they have it under control.
A tornado estimated to be nearly a mile wide has torn through much of the South. The death toll continues to rise.
Twenty five years after the Chernobyl nuclear facility melted down, one of the people who fought the disaster talks about the experience.
One year after the BP oil spill, the US energy policy hasn't changed much, but the effects on the Gulf Coast won't be known for some time.
The global brainstorming sessions Pecha Kucha are named after the Japanese word for chit chat. Now, Pecha Kucha is helping post-earthquake Japan recover.
Twitter users have provided some poignant and hopeful reflections on Japan's earthquake. One translator is sharing them with the English-speaking world.