Former Massachusetts Gov. Mitt Romney campaigns at Ring Power Lift Trucks in Jacksonville, Fla., on Monday. Polls show him widening his lead in Florida after adopting a more aggressive campaign style.
Republican presidential hopeful Newt Gingrich, with his wife, Callista, delivers remarks Sunday during a rally with senior citizens at The Villages retirement community in Lady Lake, Fla.
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Facebook co-founder and CEO Mark Zuckerberg at Facebook headquarters in Palo Alto, Calif., in 2007. The company is expected to file papers for an initial public offering this week.
Spanish judge Baltasar Garzon (center) arrives at the Supreme Court in Madrid, Spain, on Jan. 24. The crusading human-rights judge is on trial for his attempt to investigate the more than 100,000 disappearances during Spain's civil war in the 1930s and the subsequent dictatorship of Francisco Franco.
Nonnative pythons, like this one, are invading the Florida Everglades. As a top predator, the snakes have crippled the populations of rabbits, raccoons and other animals.
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A visitor looks at a Citroen diesel engine at the Geneva Motor Show in Switzerland in 2010. Diesel is popular in Europe but not the U.S.; now, automakers are giving the technology more consideration as a means to meet new fuel economy standards.