In United States, the amount of alternative and nuclear energy consumed amounts to 12% of the total energy use. United States emits 17 metric tons per capita of CO₂. The number of road motor vehicles per 1000 inhabitants in United States is 200.
Total land area of United States is 9,833,567 km2 (approx. 3,796,744 mi²). 3100950 km2 of United States's territory is covered in forests. and forest land comprises 32% of all the land in the country.
Issues United States faces
Currently United States faces various issues, including air pollution resulting in acid rain in both the US and Canada, the US is the largest single emitter of carbon dioxide from the burning of fossil fuels, water pollution from runoff of pesticides and fertilizers, limited natural fresh water resources in much of the western part of the country require careful management, desertification.