It's no secret that Americans are short on sleep. But there's been disagreement as to why. A new study says here's one big reason: work.

An analysis from the National Institute for Occupational Safety and Health asked people where they're working, and how much they sleep. The more people work, the less sleep they're likely to get. And some jobs are much less sleep-friendly than others. Sort of saw those coming, even through our bleary eyes.

In an historic judgment, the UN-backed court at The Hague found Liberia's former president, Charles Taylor, guilty of war crimes. He was convicted of abetting murder, rape, and the forced enlistment of child soldiers during Sierra Leone's civil war. Host Michel Martin talks about reactions in Liberia and Sierra Leone with journalist Tamasin Ford.

The Los Angeles riots stunned the nation in 1992, claiming more than 50 lives in that city. As the unrest approached Koreatown, store owner Kee Whan Ha mobilized his fellow business owners to arm themselves and defend their property. Host Michel Martin talks with him about the riots, and the neighborhood today.

The beating of Rodney King by Los Angeles police officers sparked the chain of events that led to the deadly L.A. riots 20 years ago this weekend. Host Michel Martin speaks with Rodney King about his memories of the riots, the beating, and his new book, The Riot Within: My Journey from Rebellion to Redemption.

It must take a boatload of energy to be Michel Nischan. He owns a restaurant, writes cookbooks and lead the fast-growing non-profit Wholesome Wave, which connects low-income neighborhoods with local, farm fresh foods. WW has doubled its reach over the last few years, linking about 2,300 local farmers with thousands of people.

In the remote valleys of southeast Oregon both birds and cattle flourish. This is where mountain streams feed an oasis of lakes and marshes in the high desert. Cattle ranchers and wildlife advocates have been fighting over that valuable grassland for decades. Now, they’ve struck a delicate truce that keeps both birds and burgers in mind. Correspondent Anna King has our story from way outside of Burns, Oregon.

The U.S. economy hit the recession exit ramp nearly three years ago, but it's been lost on the back roads somewhere near Recoveryville ever since.

Growth rates have been modest at best compared with the 4-plus percent growth in the years well before the U.S. began slouching toward its worst post-World War II recession.

The U.S. economy grew at a 2.2 percent annual rate in the first quarter of the year, according to the Bureau of Economic Analysis.

That's down from the 3 percent pace in fourth-quarter 2011, but is still better than the 1.7 percent growth for all of last year.

The first-quarter figure will be revised twice, in each of the next two months.

We'll have more about the report shortly.

Update at 8:47 a.m. ET. Behind The Numbers: