1. Researchers from the University of California San Diego have developed microrobots capable of navigating through lung tissue to deliver targeted cancer drugs. 2. These microrobots, constructed by bonding drug-filled nanoparticles to algae cells, have shown effectiveness in mice by slowing tumor growth and increasing survival rates. 3. The use of red blood cell membrane coatings on nanoparticles helps these microrobots evade the immune system, allowing for prolonged activity against tumors.