2007 Volume 32 Issue 4 Pages 51-57
Since 2004, oil and gas prices has showed abnormal hikes and remained at higher level. But, this problem is not caused by resource depletion of oil and gas. Weakened supply cushions in USA and activities of energy future market are true reasons for price hikes. On the other hand, environment constraints to energy use will be more severe. We need to concentrate our efforts to developments of innovative technologies such as hydrogen fuel.