Global - Newly published research by scientists from the Georgia Institute of Technology and the National Center for Atmospheric Research say that the number hurricanes in the past 15 years is more than twice what it was in the previous 15 year period, and that global warming trends have caused the jump. They say that storms, in the North Atlantic in particular, will continue to become more numerous and longer-lasting. Their newly published research records a direct correlation between sea surface temperature and hurricane intensity.