Why Are Tar Balls Showing Up in the Florida Keys?

The mammoth Gulf oil spill is bad enough without oil traveling through currents to other parts of the world. But that's exactly what has happened--the oil slick has reportedly been captured by the Loop Current, a fast ocean current that moves from the Caribbean Sea into the Gulf of Mexico before looping west and south, exiting through the Florida Straits. Earlier this week, authorities thought the worst when approximately 50 tar balls showed up on beaches in the Florida Keys. The good...