New research has found that hurricane activity is 'clustered' rather than random, which has important long-term implications for coastal ecosystems and human population.

DOMINICAN REPUBLIC, March 28, 2011 /PRNewswire/ -- Discover the endless underwater world of the Dominican Republic (DR), a diver's paradise with nearly 1,000 miles of breathtaking coastline that features colorful marine life and intriguing shipwrecks from when pirates sailed the Caribbean.

NASA infrared satellite data from this morning revealed that Tropical Storm Tomas has weakened into a tropical depression.

The GOES-13 satellite keeps a continuous eye over the eastern US, the Caribbean Sea, Gulf of Mexico and Atlantic Ocean, and noticed that System 99L is much better organized today, October 20, hinting that it could become a tropical depression later today.

The GOES-13 satellite passed over a low pressure area designated as "System 97L" earlier today and captured a visible image of the low in the eastern Caribbean Sea.