Araucaria, as the city tree of Curitiba, is an ancient species from the dinosaurs time. A fossil stone from Araucaria with around 250 million years was stored in Parana, Brazil. Researcher Dr. Ivar Wendling from Embrapa Forestry, gave us a detailed explanation about the important of Araucaria, from seedling cultivation, nuts producing, to the usage of wood and its fiber. Araucaria is native to some parts of the cold regions in South Brazil as well the north of Argentina and some parts of Paraguay. This long-lived tree species contributes so much to fauna, to mankind and natural environment at many aspects, and also helps us know the climate change of the past times.