It is one of the most efficient sources of energy. And it can be sold, unlike solar, wind, or water energy.
Fossil fuels are used so much today because of the many ways developed to acquire them, process them, utilize them, etc. It usage is one of the most efficient ways of converting to energy. However, it is still a problem as to how gaseous emissions from the process may be processed.
A A different kind of uracil containing DNA