This function gives the locations of selected places on Earth.
Character string giving the name of a place.
aalborg are cities in Denmark;
madrid is the capital of Spain;
perth is the capital of Western Australia;
curtin is the location of Curtin University, Western Australia;
titanic is the location of the wreck of
mawson are bases in the Australian Antarctic
southpole are self explanatory.
list(lon,lat) giving the longitude
and latitude in degrees.