Snow Sunday evening accumulating 1-3 inches, then changing to ice and continuing into late Sunday night
Dec 4, 2013; 9:54 AM ET Warmer and damp weather for the East the next few days. Colder air will then arrive, perhaps with snow and ice. Join Evan Myers and Elliot Abrams.
The sheer number of people, their interactions with animals and ecosystems, and the increase in international trade and travel are all factors that will likely change the way humanity deals with preventing and treating epidemics, experts say.