Destruction of forests is a significant contributor to climate  change. Preserving forests helps mitigate global warming. These two  facts explain why halting deforestation is a central part of much of the  current negotiations on climate change, with an international binding  forest climate agreement, or REDD+, forming a key part of discussions.  Yet, such an agreement, even if well-designed, cannot by itself save the  forests. Without reducing greenhouse gas emissions by between 85 and 95  percent by 2050, many forests, along with many other ecosystems, will  be lost.