In this week's episode Robert Tindall and David Shearer speak with Joanna about: the pre-Columbian Amazonian high civilizations that left their lands more fertile than when they arose; reintroducing ancestral wisdom in the 21st century; biochar, charcoal used for agricultural regeneration; the suppression of the indigenous ways of consciousness in Europe;  bridging the scientific and the indigenous views of the world;  biochar, biomimicry of fire;  "shamanic archaeology"; re-encountering the animistic, multidimensional mode of perception; a vision about the missed possibilities of the meeting of two cultures and the future; the Amazon women of the Amazon.