Don't let summer sap your smarts. These sneaky little games and snacks will keep you sharp. Your brain will thank you.
By Susan Hall
Traveling, especially abroad where English isn't spoken, can make you smarter. "There is a great deal of recent research demonstrating that bilingualism enhances cognitive function," says Judith Kroll, Ph.D., professor of psychology, linguistics, and women's studies, and director, center for language science at Pennsylvania State University.