There are many types of energy. In today’s world, usually, we focus on using nuclear power. Coal energy is not used anymore. Wind energy is used, too, but it is difficult to capture, and it is unexpected. Coal was mined many years ago. There were coal mines where many people in the town would work in the mines. However, it was dangerous because mines could collapse, and they could coal dust would get into the miners’ lungs.
Eventually, the miners might die from black lung disease. Coal energy is not used as much today as it was back then. Today, nuclear power is used, but it is dangerous too. Coal is a nonrenewable resource, so once it is gone, that is it.