Climate Change, Dams, Deforestation a Vicious Cycle for Amazon Rivers, Lakes

Dams, mining, land-cover changes, and climate change are degrading the streams, rivers, lakes, and forests of the world’s largest river basin at unprecedented rates, according to scientists.  From: phys.org

GR:  The problems were recognized by Alexander von Humboldt over 200 years ago.  What does that say about professional land management and planning agencies?