TRANSCRIPT: #whyisign I have many reasons for that. One of many reasons why I sign is science. I am studying microbiology where I get to analyze different objects in the microscopic scale such as; bacteria, virus or substances in the cells. So we can't really see them with our naked eyes, but with American Sign Language they can be seen! For example, deoxyribonucleic acid, abbreviated as DNA, is signed like that way. With the sign for DNA, we are able to visualize what it looks like. That's why ASL is beautiful!