I saved these proceedings of a 1978 international conference at the University of Wisconsin on the peril of the people & ecology of the Amazon Region I also saved these two NatGeo issues from the early 2000s on global warming and the melting arctic - We know, we knew, and we could not act. How do we change? The earth has given us warning, signals, pleas for change. #ClimateChange #GlobalWarming #AmazonForest #ArcticIceDecline