Unraveling the Enigma of Antarctica's Blood Falls

Scientists at Johns Hopkins University have finally unraveled the mystery behind Antarctica's Blood Falls, a waterfall that appears to flow with blood. Using powerful transmission electron microscopes, researchers discovered the presence of iron-rich nanospheres in the water, which oxidize and give it a gory appearance. These nanospheres, one-hundredth the size of a human red blood cell, contain elements such as silicon, calcium, aluminum, and sodium.