May 24, 2013; 6:01 PM ET
Another plunge of chilly air will set the stage for the risk of a frost and freeze centered Michigan, Ohio, West Virginia and other nearby states this weekend. more >
Rain and a thunderstorm late Tuesday night
Researchers have been studying the role vitamin C plays in preventing and treating the common cold for more than 60 years.
Influenza infections follow distinct patterns around the world, and a new study links some of these changes to the local climate.
An emerging superbug is infecting an increasing number of people in the United States.