Infectious diseases—those spread by contact with infected people or animals, through airborne inhalation, or by water or food—are still threats to us today. Think you've got all the facts? Test yourself!
What the end of the war in Afghanistan means to one family
A year after U.S. troops pulled out of its longest war, National Geographic revisits an Afghan mother featured on the cover and her family’s experience offers a glimpse of life under Taliban rule.