The tropical rain forest of the Amazon region was not the vast uninhabited jungle wilderness envisioned by early archeologists, but has been a home to human populations for as long as 12,000 years, ...

When Arno Calderari was 13, his father gave him a book that changed his life. “It was in German,” the Switzerland native recalls. “I read it and re- read it, and the more I read it the more fascinated ...