Instead of using harmful and potentially dangerous chemotherapy to combat cancer, South Korean scientists have invented a way to treat the disease using nanorobots. The treatment works by using modified benign salmonella bacteria to deliver capsules loaded with drugs that directly attack cancer tumors. Once the capsules reach the tumors, they then release their drugs, effectively treating the deadly disease.

The nanorobots are not officially available yet, but head researcher Park Jong Oh says it works on mouse tumors and should be effective on humans as well. The benefit of the treatment is that it has significantly less severe side effects than chemotherapy. The United States, Japan and Europe have already patented nanorobotics and are working toward approving them for human use.

Here is a video demonstrating how they work:

Photo of the nanorobots attacking the tumor.