Arkness in El Dorado: How Scientists and Journalists Devastated the Amazon

after reading the book please answer the following:
How did scientists and anthropologists nearly destroy the Yanomami of the
Amazon region? What lessons can be learned from the story of the Yanomami, in
terms of modernization (meaning western society) and how it views and treats
third world peoples (meaning the Yanomami)? In other words, is western science
always helpful in understanding people that we deem as Less civilizedor
non-western? Do you think the Yanomani have been better off if they were just
left alone?