Your Smile Matters 5/12/13

No Guest - Subject: Radiation Excerpts from the book, "Radiation", by Robert Peter Gale, M.D., and medical writer Eric Leux. 1) Beginning description of radiation and how it touches our lives in many ways. 2) Earth is a radioactive planet, in the radioactive solar system, in the radioactive universe. Without radiation, tere would be no life on Earth. 3) Most of us would like a precise estimate of our cancer risk from a radiation exposure, but the limitations of data do not lend themselves to precise estimates.