Be alert! People who take sunbaths in beaches. There is news for you from the scientists. Scientists have got a clear link between ultra violet (UV) exposure and skin cancer. There are some bad changes happening in the ozone layer, which once protected us so well. UV levels are rising and are damaging our deoxyribonucleic acid (DNA). Our cells are struggling to repair this damage by number of mechanisms. If the damage is so great, the cell dies. You can see the skin peeling after sunburn.
Sometimes the damage is so insidious that it causes permanent changes in the genes which are instruction carriers. As the cell attempts to repair the damage these changes are caused. In these cases, when the damage prevents the DNA from being read, the cell may simply guess as the meaning changing instructions. The changed instructions may tell a cell to divide when it should not divide or it may instruct the cell to die when it should not die. These are the changes that make a cell cancerous.