Former Utah Gov. Jon Huntsman addresses the Faith and Freedom Coalition in Washington, D.C. In the upcoming Republican primaries, limits on carbon emissions — which Huntsman once supported — are not expected to be a pivotal issue. Win McNamee/Getty Images hide caption

Three Chinese companies are building a massive superhighway in Kenya linking Nairobi with the city of Thika. The road, as wide as 16 lanes, is the biggest of its kind in East Africa. Frank Langfitt/NPR hide caption

St. Louis, whose location on the Mississippi River made it a hub for the sale of slaves, marked the Civil War sesquicentennial by re-enacting a slave auction in January. Missouri officials hope the anniversary will draw more attention to the state's Civil War history. John Moore/Getty Images hide caption

Web domain czars expect an explosion in Internet address suffixes. Istock Images hide caption

Airline passengers pay wildly different amounts of money to take the same flight. Airlines reporter Scott Mayerowitz says one way to pay less is to shop for tickets in the middle of the week. Kevork Djansezian/Getty Images hide caption

Protesters in the Yemeni capital, Sanaa, demand the resignation of President Ali Abdullah Saleh on June 17. Some Yemen watchers argue that current U.S. policy in the country may create sympathy with al-Qaida where none existed before. Hani Mohammed/AP hide caption

The official Syrian News Agency (SANA) released a photo showing Syrian President Bashar Assad addressing the nation from Damascus University on Monday. Ho/SANA/AFP/Getty Images hide caption

Gibbons Hall at Catholic University of America in Washington, D.C., will be switching from co-ed dorms to single-sex dorms in the fall. Emily Bogle/NPR hide caption