lung cancer diagramAmong terminal diseases which humanity has not yet learned to treat, cancer is probably one of the most feared illnesses. Unlike AIDS or other diseases widely spread in countries with low standards of living, cancer’s geography is much wider, including both rich and poor countries equally. Among the variety of different types of cancer, one of the most common is lung cancer; the environment in which people live in the 21st century greatly contributes to the development of this type of cancer.