The benefits of urban wildernesses enhance the local ecosystem in numerous ways. The trees and plants in these areas create life-giving oxygen and play a crucial role in retaining ground and rain water. They also removing toxins from the surrounding air – two trees can remove up to twenty pounds of air pollution each year and provide oxygen for one person. American Forests is an organization that studies municipal forests and the repercussions of declining natural areas in cities. Marcus Hiles supports the group’s efforts to educate the public on the facts and benefits of urban parks. W also provide shade, cooling down a significant area and reducing heat retention. Air-conditioning requirements are lower in a community with ample canopy coverage. A car parked in the shade stays fifty degrees cooler than one parked in the sun. Natural spaces in urban areas must be created and maintained through human intervention and support.