European countries have agreed to stop importing Iranian oil as of Sunday. This could make it harder for Iran to find markets for its crude. Iran has been filling up tankers off its coast, but analysts say it could run out of storage capacity. This photo shows oil tankers off Iran's coast in January. Kamran Jebreili/AP hide caption

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Use of synthetic "bath salts," compounds sold legally but used as a controlled substance, has been on the rise since 2010. Brian Peterson /Minneapolis Star Tribune hide caption

itoggle caption Brian Peterson /Minneapolis Star Tribune

The Egyptian Presidency released this image of Mohammed Morsi giving a speech to tens of thousands of people in Cairo's Tahrir Square on Friday. Morsi was sworn in as Egypt's president on Saturday. Sherif Abdel Monaem/EPA /Landov hide caption

itoggle caption Sherif Abdel Monaem/EPA /Landov

Nearly 350 homes have been destroyed by the Waldo Canyon fire in Colorado. Spencer Platt/Getty Images hide caption

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Doug Jones, owner of Piedmont Biofarm in Pittsboro, N.C., waters vegetables as temperatures in the South soar, Friday, June 29. Triple-digit temperatures are expected for several days in North Carolina. Gerry Broome/AP hide caption

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College students surrounded President Obama earlier this month when he called on Congress to stop student loan interest rates from doubling. Congress agreed on a deal to prevent the hike on Friday. Jewel Samad/AFP/Getty Images hide caption

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