which major research organizations are located there?
McMurdo Station
Antarctica
 McMurdo Station, which is the largest research station in Antarctica, is capable of housing more than 1,000 scientists, visitors, and tourists.
what parts of south america are part of antarctica South America and Australia were not part of the fabled "Antarctica". when was it explored the first time? 17 January 1773. when did it break from gondwana? UNANSWERABLE is there any human population there? Yes, 1,000 in winter to about 5,000 in the summer.
wiki:22093121
Antarctica [SEP] Research
Each year, scientists from 28 different nations conduct experiments not reproducible in any other place in the world. In the summer more than 4,000 scientists operate research stations; this number decreases to just over 1,000 in the winter. McMurdo Station, which is the largest research station in Antarctica, is capable of housing more than 1,000 scientists, visitors, and tourists. Researchers include biologists, geologists, oceanographers, physicists, astronomers, glaciologists, and meteorologists. Geologists tend to study plate tectonics, meteorites from outer space, and resources from the breakup of the supercontinent Gondwana. Glaciologists in Antarctica are concerned with the study of the history and dynamics of floating ice, seasonal snow, glaciers, and ice sheets.