Cancer is definitely one of the biggest problems in the world today. But I have an idea that could solve cancer. Now, as far as I know cancer is when your cells divide/multiply uncontrollably. But, what if there was a chip, or some kind of cell that could be transported into the body by a shot, like a vaccine. What this chip, or cell would do is, travel into the body, find out where the cells are dividing uncontrollably and do something to the cells, that could make them stop dividing uncontrollably. Maybe, the chip, or cell could give a signal to it to stop multiplying. After the cells stopped dividing/multiplying, a different cell, or chip could be inserted into the body that could destroy all of the unneeded cells. Well, that's my idea!