Oil Slick Triples in Size, Fast

Satellite images show Gulf spill has grown tremendously in a couple days as rough seas thwart cleanup effort | MAP• Obama to Visit Gulf Coast for Briefing | VIDEO• Two Offshore Platforms Shut Down Near Gulf Spill• SLIDESHOW | LIVESHOTS: How to Skim an Oil Slick• 'The Bad One': Spill Has Recipe for Catastrophe• YOU DECIDE: Should U.S. Scale Back Offshore Drilling?• LOCAL COVERAGE: New Orleans | Gulf Coast | Fla.