Leena Allen, 9, tries to beat the miserable heat by standing in front of a misting fan during a visit to the Saint Louis Zoo in St. Louis, Mo. Jeff Roberson/AP hide caption

itoggle caption Jeff Roberson/AP

A protester waves the national flag of Greece during a demonstration Tuesday at Athens' Syntagma square in front of the Greek Parliament. Demonstrators have been camped outside Parliament since May 25. Lefteris Pitarakis/AP hide caption

itoggle caption Lefteris Pitarakis/AP