Around The Horn - Ushuaia, Argentina, Falkland Islands, Montevideo, Uruguay, Buenos Aires Last week, we wrote about seeing penguin Glenn Miller near Punta Arenas, Chile. Since then, we’ve stopped in five interesting ports, and now our 34-day San Diego to Rio de Janeiro, Brazil, cruise has come to an end. We arrived in Rio Wednesday, rented a car and drove 6 ½ hours to Itamambuca Beach, about 180 miles south of Rio. We will spend two weeks here. More on these next two we