Atmosphere of Earth development of animals. Today's atmosphere contains 21% oxygen, which is great enough for this rapid development of animals. "Air pollution" is the introduction into the atmosphere of chemicals, particulate matter or biological materials that cause harm or discomfort to organisms. Stratospheric ozone depletion is caused by air pollution, chiefly from chlorofluorocarbons and other ozone-depleting substances. The scientific consensus is that the anthropogenic greenhouse gases currently accumulating in the atmosphere are the main cause of global warming. On October 19, 2015 NASA started a website containing daily images of the full sunlit side of Earth on http://epic.gsfc.nasa.gov/. The images are taken
Greenhouse debt Greenhouse debt Greenhouse debt is the measure to which an individual person, incorporated association, business enterprise, government instrumentality or / [and] (per Neb., USA) geographic community exceeds its permitted greenhouse footprint and contributes greenhouse gases that contribute to global warming and climate change. The concept makes no sense without a clear numerical value for the permitted greenhouse footprint. It is not clear what this value is. Friends of the Earth and similar organisations put forward the concept to define specifically the environmental harm caused by developed countries' past and present policies. Some governments, at least the Australian Labor leadership, have