For most of human history, medical treatment has relied on methods such as pills, injections, and surgery. Now, scientists are exploring a new idea: making tiny, programmable machines from DNA that can move through the bloodstream.

A recent review published in the journal SmartBot says these DNA nanorobots could one day be capable of delivering drugs to specific locations in the body, capturing viruses like SARS-CoV-2, and even helping build tiny computing devices. Even though these ideas are exciting, the technology is still in its early stages.

Early Stages of Development.