Most of the energy is created by burning fossil fuels: coal, natural gas and oil. The problem with this is that these resources are not infinite. If we continue using them like that, it is expected that the world will run out of these kind of fuels in thirty to forty years at most. Therefore, it will no longer be possible to generate power to operate factories and vehicles or to light and heat our homes. With this problem, we can think of two solutions:
The first solution is to improve conservation efforts. In order to do this, we could encourage the installation of high-efficiency light bulbs in houses and offices. We could also make laws mandating the recycling of whatever possible, or tell people to use more public transport, although these things will not avoid the eventual run out of fuels.
Then the second and better solution would be the alternative sources of energy. One example of the current alternatives to fossil fuels is solar energy. Solar energy is directly obtained from the sun so it is easily accessible and pollution-free. It can be used both to heat water and buildings and to generate electricity, but mostly in countries that have ample sunlight.
In conclusion, in order to have sufficient energy for the next century, it will be necessary to develop and encourage the use of alternative energy sources all around the world.
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