Pleasant this weekend
May 23, 2013; 5:00 AM ET Cool temperatures and widespread rain will affect Western Europe on Friday while sunshine and cooler temperatures move into the Northeastern United States.
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.