This document discusses uncertainty in forest management planning due to climate change, changing societal expectations, and globalization. It outlines three scales of forest management and sources of uncertainty at each scale. Specifically, it notes that climate change is a major cause of current and future uncertainty since tree growth and disturbances will change in unprecedented ways over decades or centuries. The document advocates for approaches like using multiple scenarios and projections, adaptive management through continuous learning and adjustment, and mainstreaming changes to regulations to help forest managers adapt to increasing uncertainty.