It is about time to design substitute structures and renewable energy because:
1. The oil reserves of the world are slowly
being exhausted and it will be all the more difficult to get oil.
There is not enough oil for us and for the fast
developing countries like China and India.
2. Furthermore, the oil reserves are heavily concentrated in only few areas of
the world, which tends
to cause various availability and price crises.
3. Sulfur, nitrogen, soot and, most of all,
carbon dioxide emissions destroy our planet before long
and cause both predictable and unpredictable natural
catastrophes.
4. If oil runs out suddenly and we have not been prepared for it, then the collapse of the economy :
hunger,
riots, wars follow - perhaps the collapse of the civilisation and many people will die.
Mine coal ?
Tapani Hakonen