The United States Department of Agriculture (USDA) Forest Service currently estimates that the US is home to 300 billion trees. In fact, states like New Hampshire have as much as 80% of the state covered in trees. However, this high number is at risk due to environmental factors. Unsustainable logging, fire suppression, and other poor land management practices, for example, have led to the spread of non-native pests and invading other wooded areas. The spread of invasive pests, as well as wildfires, have already caused massive losses since 2001. The state of Alaska alone has lost 6.3 million hectares of land.