Lake Titicaca is the largest lake in South America, and because of its size and high altitude (3,812 m/12,507 ft) is the highest navigable lake in the world. The lake is considered to be the ...

Sitting in low Earth orbit, the International Space Station offers astronauts aboard some spectacular views, including this one of Lake Titicaca in Peru. At 3,200 square miles (8,300 square kilometers ...

New insights into the depths of Peru's Lake Titicaca have been gleaned thanks to a satellite image showing an optical phenomenon known as "sunglint." Sunglint occurs when water surfaces reflect ...