Cows graze at a Horizon Organic farm in eastern Maryland. Even though the milk produced here is deemed organic, a very small percentage of corn used to feed the animals may contain genetically modified material because of unavoidable cross-pollination between genetically modified corn and the organic variety.
A production plant on the short of Mellitah, Libya, opened in 2004. Owned by Eni, the Italian oil and gas company, the facility is part of a pipeline that connects Libya to Sicily. Political unrest in the African nation is having effects in the worldwide oil market.
Eni Press Office/AP
Space shuttle Discovery lifts off at Kennedy Space Center in Cape Canaveral, Fla., on Thursday for the final time. The world's most traveled spaceship is heading toward the International Space Station with a crew of six on a journey that marks the beginning of the end of the shuttle era.