Deep In The Amazon, An Unseen Battle Over The Most Valuable Trees : NPR

For generations, the rubber tappers of the Amazon have gone about their business in a way that preserves the rain forest. Today, they are increasingly in conflict with criminal logging gangs.

http://www.npr.org/2015/11/04/452555878/deep-in-the-amazon-an-unseen-battle-over-the-most-valuable-trees