Selective logging—where specific high-value trees are cut—in tropical forests affects biodiversity, forest structure, and carbon storage. According to a 2009 study, timber was removed from over 20 percent of the area of humid tropical forests during the 2000s. Notably, more than half of the greenhouse gas (GHG) emissions from forest degradation in the tropics have come from selective timber harvests. (Source: Mongabay)