Secretary of State Clinton calls for limits on tourism in Antarctica . the United States is proposing new limits on the number of landings from tourist vessels . Clinton addressed State and Antarctic Treaty Consultative Meeting . Twelve nations signed the Antarctic Treaty in 1959 ; Twelve nations abide by it today .
Secretary of State Hillary Clinton calls for limits on tourism in Antarctica . U.S. is proposing new limits on the number of landings from tourist vessels . Clinton addressed Arctic Council and Antarctic Treaty Consultative Meeting . Twelve nations signed the Antarctic Treaty in 1959 ; 47 nations abide by it today .