Some Figures
Relevant to Understanding
Impact of Humanity of Global Environment
HUMAN POPULATION
| 8,000 BCE | 1 C.E. | 1500 | 1820 | 2000 |
| 2-20 million | 200-300 million | 500 million | 1 billion | 6 billion |
World-WIDE Energy Use, 1800-1900
|
|
1800 | 1900 | 1990 |
|
Energy Use by Human Beings (in millions of metric tons of oil equivalents) |
400 | 1,900 | 30,000 |
|
Energy Use by Human Beings Indexed to Use Level of 1900 |
21% | 100% | 1,580% |