For years we live with electricity. This energy can help many things. Nowadays, almost all equipments that we use need electricity to run it. When we want to watch TV, we need electricity or when we want to use the elevator. Lamps, computer, cell phone and others need electricity.
Now, what happen when we can not get electricity again to support our life?. Obviously we have to find other resource and it needs time and hard work to introduce this new energy. So people can know it and use it.
Solar energy is number one option. Because, We live with the sun every year and it not to hard to process it into energy. The problem is not every country can get sun light all year. For tropical country, this energy is so perfect. But maybe if we try to use solar energy in North Pole, it is look impossible. For windy country, they can get energy from the wind. With a big fan which can move the generator to produce electricity.
We realize that sooner or later, we will lack our oil. It is very important for us to protect it. Maybe not every single person in this world will care about where we get our energy. So we need to tell them how to save the energy. Not for us but for our grandchildren and generation after that.