Researchers at MIT are developing a self-powered, sensor technology system. Manipulating differences in air temperature or body-temperature, these scientists are working towards the creation of sensor systems that may not need external power sources. Applications for such sensors are extensive---the most relevant applications that come to mind, however, are in medicine and medical implants. The possibility of creating internal, self-powered, biomedical monitoring systems or treatment systems could greatly reduce invasive follow-up maintenance procedures. To read more about the technology or the treatment methods, read here.