A gun turret on the sunken Australian warship HMAS Sydney. All 645 people aboard the Sydney died. AP hide caption

itoggle caption AP

A neutrino detector like this one, seen at Los Alamos National Laboratory in 1995, was used to collect data claiming that neutrinos can travel faster than the speed of light. Fred Rick/Time & Life Pictures/Getty Image hide caption

itoggle caption Fred Rick/Time & Life Pictures/Getty Image

Cattle and zebra share a meal in a pasture in Kenya. Ryan Lee Sensenig/Science hide caption

itoggle caption Ryan Lee Sensenig/Science