Antarctica is a continent surrounded by water that is entirely covered in ice. It has extreme cold temperatures, especially in the east, and hardly any plant or animal life due to the harsh climate. While rich in natural resources, a 1991 treaty prohibits mining in Antarctica. It was explored starting in the 1700s and mapped out in the 1800s, with various countries making claims until a 1959 treaty designated it for peaceful research only. Today, numerous research stations operated by many countries study the continent.