What would happen when all the fossils fules will run off

I think we will result to other sources of energy like geothermal, wind, solar and etc. there is a study that concludes that if the oil rich country run out of juice, the next country that will be powerful are the countries that are rich with alkaline. Then we will be getting energy from batteries, but I guess it won't be as effective as of now. Or maybe, nuclear energy will be a hit.

Many experts believe that before fossil fuel runs off there will be war on oil. Of course BIG countries will seek oil so much that every single drop of oil will be expensive. The only solution to avoid the war on oil is to find an alternative source of oil/fuel aside from fossil fuels. We all know that oil is the one that makes the country running. Man will still find a solution to that problem soon enough.

There already attempts to find alternative energy sources but production costs and usage practicality have made them less viable. For example what safe and efficient energy source can be used for an aeroplane? How far can an electric vehicle go, and how long is the recharge time? Unless the drawbacks of alternative energy sources are reduced and/or minimised certain parts of the world will be back to the dark ages when the crunch comes.

In that case, the big oil will have to find another way to pollute our environment , ocean and the earth's atmosphere again, they will be very angry that human kind survival are no more subjected to the threat of environmental disaster by their fossil fuel.

solar energy and wind energy are great alternatives to fossil fuel energy. there is an inexhaustible supply of both solar and wind energy so therefore a shortage off supply will never happen. and the most important aspect of these two sources of energy is they are friendly to the environment. they do not pollute the air with their toxic fumes or run offs and their sources are free namely from the wind and from the sun.

The world is realising this and steps are being taken to reduce our dependency on the fossil fuels as they are very limited and cause pollution as well. Many other alternatives are being created like fuel made from plants known as biofuels. So, by the time fossil fuels run off we would be dependent on other fuels.