Though you may have scrounged the Internet to find the perfect pillow, box or envelope for storing lost teeth, once the tooth fairy leaves her present, those teeth usually sit untouched hidden in a drawer. The lost tooth process can take on a whole new meaning if used to introduce lil ones to The Tooth Fairy Project. Created by the Radiation and Public Health Project (a watchdog group), The Tooth Fairy Project, studies levels of radiation found in baby teeth to determine where the highest levels of strontium-90 are located in America. Strontium-90 deposits itself in teeth and bones, just like calcium, so studying baby teeth allows researchers to see where the radiation is being released. The project hopes to identify whether radioactive material is being released by nuclear power plants, the effect of the Chernobyl disaster in America and if radiation levels have increased over the years. Participation in the project is simple – just fill out a form detailing where you live, when your tot was born and where you lived when pregnant, and send it in with the tooth. The group hopes to collect 10,000 teeth, and is about halfway there.