Fire is connected with burning and flame. When people learn to get fire, it was a great step forward in the development of humanity and in evolution. At first people were afraid of fire considering it to be a god who may kill people. Later people learn to use it in their needs. Fire may be useful and dangerous at the same time. The flame damaged a great number of ancient buildings and libraries. Fire damages everything without leaving traces, only trash is left after it. But thanks to the fire people have the possibility to cook, to warm their houses, to delete litter, to fuse metals, etc. It is used by thousands of people every day.
