The U.S. Navy version of the F-35 Joint Strike Fighter conducts a test flight on Feb. 11, 2011, over the Chesapeake Bay in Maryland. The F-35 is the fighter jet of the future for the U.S. military, but its high cost and many delays have raised questions.
U.S. Navy/Lockheed Martin/Getty Images
Chiara Andolina, a malaria researcher in Thailand, feeds her mosquito colony by letting the insects bite her right arm. These mosquitoes are picky and will dine only on live human blood.
Ben de la Cruz/NPR
A policeman stands guard at the Parliament building in Islamabad, Pakistan, in June. The Lower House recently passed a bill similar to the United States' Patriot Act, touching off a debate about privacy in the country.