Scientists are trying to make tiny robots to go inside the human body. The robots will be one millimetre square. They will help people by cutting away fat around the heart to stop heart attacks. First, to make sure the robots are safe, they will work inside animals. Doctors like the idea of these robots because they will not have to pot put sick people to sleep with gas and than cut them open to make them better. Using tiny robots will be cheaper and safer. There will be different kinds of tiny robots to make very small things in factories and to clean up dust in houses. In the future,tiny robots will be everywhere, like ants.