Useful Links:

Argentina:   

                    Buenos Aires - http://en.wikipedia.org/wiki/Buenos-Aires

                    Cordoba Province - http://en.wikipedia.org/wiki/Córdoba_Province_(Argentina)

                    La Pampa Province - http://en.wikipedia.org/wiki/La_Pampa

                    Iguazu Falls - http://www.iguazuargentina.com/

                    Agriculture - http://en.wikipedia.org/wiki/Agriculture_in_Argentina

                    Tango - http://en.wikipedia.org/wiki/Tango_(dance)

Brazil:

                    Brazil - http://en.wikipedia.org/wiki/Brazil

                    Agriculture - http://en.wikipedia.org/wiki/Agriculture_in_Brazil

                    Instituto Agronômico do Paraná - http://www.iapar.br/

Uruguay:

                    Colonia, Uruguay - http://en.wikipedia.org/wiki/Colonia,_Uruguay

                    Instituto Nacional de Investigacion Agropecuaria - http://www.inia.org.uy/online/site/2144I1.php

Chile:

                    Valdivia, Chile - http://en.wikipedia.org/wiki/Valdivia%2C_Chile

                    Pucon, Chile - http://en.wikipedia.org/wiki/Pucon

                    Reserva Costera Valdiviana - http://www.reservacosteravaldiviana.cl/beta/

                    Valdivian Costal Reserve - http://www.nature.org/wherewework/southamerica/chile/features/

                    Centro Ballena Azul (Blue Whales) - http://www.ballenazul.org/rhucke.html

                    Universidad Austral de Chile - http://www.uach.cl/catalogo/english/campus.htm