The petroleum reserves are being depleted.

The prediction that I am going to do today is that I calculate that in approximately thirty years the oil will become exhausted. In my point of view we are going to live through the major crisis of the history, since though even we have renewable sources, the oil is very important in our lives and many sectors depend on this one. For example, nowadays the food is transported in planes, trucks ... when already we do not have more, the prices will rise up even more and this will carry to put up the price of the food, and only the richest persons will be able to buy it.
It is going to be a huge problem, because all the transport in the world use oil,though already there are engines that work with another type of energy, to change all the transport is going to be very expensive and not the whole world is going to be able to support it. It would be many businessmen, overcoat medium company that are going to be ruined and the families of low middle class are going to pass it badly, for that everything will increase in price and his buying power will not allow them to be able to support it.
Still I able to predicting, that the countries that nowadays support his economy in the sale of oil, or they seek for another new source of income, or his economy could to be fatally affected.