Synthetic biology is a multidisciplinary field of science that combines engineering principles with biology to create new biological systems or to redesign existing natural systems. It involves creating artificial biological systems for practical uses in energy, medicine, and the environment. The main aim is to design biological systems for specific tasks, using genetic engineering to enhance existing organisms or create new ones with specialized functions. For example, integrating spider DNA into silkworms can result in super strong, ultra-lightweight silk production.