Instructional assistant Jessica Reeder touches her nose to get Jacob Day, 3, who has autism, to focus his attention on her during a therapy session in April 2007. Rich Pedroncelli/AP hide caption

Thousands of students from around the world flock to courses near Bologna, in central Italy, at the headquarters of Carpigiani, the leading global manufacturer of gelato-making machines. Giuseppe Cacace/AFP/Getty Images hide caption

Clearly, he's as surprised by the allegations as the rest of us. iStockphoto.com hide caption

When you need to illustrate a story about proliferating social-media platforms, it's good to know that an enterprising stock photographer has probably thought about it already. Anatoliy Babiy/iStockphoto.com hide caption

A protestor is carried away from a demonstration in Jacksonville 50 years ago. Jim Bourdier/AP hide caption