Science may be Antarctica's number-one mission now, but it wasn't always that way. This icy land was once hotly contested turf during the Cold War. Starting in the 1950s, the U.S. military launched a program to flex its operational muscles in this icy place, called "Operation Deep Freeze."
Since then, the entire continent has come under international control; cooperation is the watchword today.
Credit: CBS/Edward Forgotson