Investigators work outside the 16th Street Baptist Church in Birmingham, Ala., following an explosion that killed four young girls. Three Ku Klux Klansmen were convicted in the bombing years later.
The surface tower at a drill site, under construction during blistering Antarctic winds. Data from instruments, deployed through 450 meters of ice, is transmitted from the tower by satellite back to the Naval Postgraduate School.
Image courtesy of Tim Stanton