DNA-based computing just got a big boost. A method of amplifying weak chemical signals in a way that can be tailored to specific molecules has brought DNA-based circuits closer to practical applications.In conventional digital electronics, electrons are the carriers of information. In DNA-based circuits, fragments of single-stranded DNA are the carriers of information instead. Rather than encoding 1s and 0s as high and low voltages, DNA-based circuits use high and low concentrations of given fragments of DNA.
