Kate Evans The Amazon’s trees, soils and mysterious earthworks tell the story of the millions who lived there before European arrival When loggers and cattle ranchers began toppling the rainforest in Brazil’s far western state of Acre, they revealed a mystery: vast ancient earthworks, hidden for centuries under the trees. These “geoglyphs” took the form… Continue reading Ancient Amazonian societies managed the forest intensively but sustainably — here’s what we can learn from them