The clear and overwhelming evidence is that logging makes forests more flammable. These are the findings of four peer-reviewed, published scientific studies from four institutions in six years, and of multiple scientific reviews.   The likely reasons are that after logging, increased sunlight dries out the forest floor, thousands of fast-growing saplings per hectare increases the fuel for a fire to burn, and the wind speed on hot days increases because of the lack of a tree canopy (wind speed is a key factor in creating extreme fire conditions). Most branches that burn in a bushfire are smaller than the diameter of a human thumb. Young trees burn almost completely while big, tall trees often remain alive and standing after fire.  Climate change is already resulting in more extreme fire danger days, and the evidence is that native forest logging makes things worse.