US = 5% of the population and 20% of geenhouse gases.
today there are 6.5 billion people by mid next century 9 billion.
Demand for energy to grow by 50% by 2030. US pop to grow by 34 % between 2005- 2030.
If oil remains above 50 bucks a barrell, alternative energy investment will continue
Chinese could have 800million cars if bought at the rate that Americans do. in 1990, 35 urban areas with over 5 million people. Today there are 54. 38 in the developing world. (plot) World largest City link . http://www.mongabay.com/cities_pop_01.htm
The Center for Environment and Population each American in effect takes up 20 percent more land than he or she did 20 years ago.
Fifty-three percent of Americans live within 50 miles of a coast, on only 17 percent of the nation's land.
However Seven of the 10 fastest-growing cities in the United States are in arid Arizona, Nevada, or Colorado, and Nevada is our fastest-growing state.