Brighterworldktsm.com - Sponsored By The El Paso Electric Company: Study: Tropical rain band shifting north Study: Tropical rain band shifting north ================================================================================ MSNBC on 02 July, 2009 06:39:40 Earth's most prominent rain band, near the equator, has been moving north at an average rate of almost a mile a year for three centuries, likely because of a warming world, scientists say.