Nanotechnology holds the promise of being able to detect cancer in the early stages when cell count ranges between 10-100 cells rather than 1 billion cell colonies. Shming Nie invented a light emitting beacon; the beacon has selective molecules that work like velco, sticking to the cancer cell; the 5 nanometer Quantum Dot emits a orange-red hue; the beacon is composed of a cancer recognizing polymer and protect against the toxicity of the cadmium selenide. DNA scaffolding extended the duration of light emissions by the beacons. [Learn More ...]