Shamans of the Amazon
A fascinating account of and Amazonian people and their battle to protect their ancestral territories. Interestingly they use ayahuasca (a brew of traditional shamanic medicine plants) to know what they need to do next. Ayahuasca contains the neurotransmitter DMT, a chemical which our brains are currently chronically short of. DMT plays an important role in our perceptual abilities (see page 149 'Left in the Dark' by Tony Wright).