Scientists at Princeton have come up with a sensor they say they could tattoo on a tooth. The sensor can detect and diagnose medical conditions. The sensor is very sensitive to specific bacteria that can cause infection, so could be useful for hospitals in preventing additional illness. Plus, you'd have a tattoo on your tooth ...
Jena Nardella, the executive director of Blood:Water Mission, writes about the numbers associated with unclean water, and the organization’s water campaign for Lent. Read More