Reuters: In the Juma forest reserve deep in Brazil’s Amazon, conservationists will receive money from a Brazilian bank and a global hotel chain to protect trees and combat global warming. The project is seen as a test case watched by other potential donors, mostly in rich countries, who want to help preserve tropical forests as a way to reduce their carbon footprints but have doubts about accountability and measuring success. The Washington, D.C., area-based Marriott hotel chain agreed …