Iranians line up at a gas station to fuel their motorcycles in central Tehran in February. Oil is the lifeblood of Iran's economy, but the planned EU boycott is expected to deal a major blow to Iranian oil exports.
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As schools look to cut costs, more are considering using computers to grade students' writing assignments and to provide writing help. The programs can assess large numbers of papers in seconds.
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Isabel Doran, 4, gets a CT scan at Children's National Medical Center with her mom, Veronica Doran. The X-ray radiation in CT scans raises the risks for cancer, including leukemia, a new study shows.
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