Conventional chemotherapy can wreak havoc on healthy tissue, causing painful side effects, and it's not always effective. Nanotechnology-based methods to deliver these drugs only to cancerous cells have shown promise, but they don't work for all cancers. Now a handful of research groups are developing more-complex approaches that use microscopic carriers to deliver a variety of particles--including drugs, molecular tags that target tumors, and imaging agents to monitor and destroy cancer cells. In theory, these microscopic delivery vehicles would evade the body's defenses and target blood vessels near a tumor, then release their payload.  Read the full MIT Technology Review article here >>