How to do ecotourism in Argentina

Care for a horse-ride on the breathtaking Patagonian landscape? Or maybe a 4x4 tour down a desert? Take a glance at glaciers? What about a walk in the national park that holds one of the Seven Natural Wonders of the World, Iguazú Falls? Or want to go to a Buenos Aires’ milonga and dance the tango all night? All of this and a whole lot more is what Argentina has to...