Rising temperatures from climate change are driving animals northward into new environments, raising concerns that pathogens hitching a ride may bring new diseases -- especially to southern U.S. states, including Louisiana. The world's warmest and wettest climates are home to some of its most worrying diseases like dengue, yellow fever and malaria. Louisiana and other Gulf Coast states could become a portal through which new diseases enter the United States, carried in the bloodstream of northward-bound species, scientists say. The warning comes as an Associated Press analysis this week of temperature data shows widespread and faster warming over the past...