We inherited our current fossil fuel based world energy economy from another era. (insteading.com)
The authors note that as fossil fuel reserves shrink, as air pollution worsens, and as concerns about climate instability cast a shadow over the future of coal, oil, and natural gas, a new world energy economy is emerging. (earthpolicy.org)
Turning to Renewable Energy (pdf) Introduction Harnessing the Wind Wind - Powered Plug - In Hybrid Cars Solar Cells and Collectors Energy from the Earth Plant - Based Sources of Energy River, Tidal, and Wave Power The World Energy Economy of 2020 Chapter 12 Data (xls) (earthpolicy.org)