The first lesson, Isotopes of Pennies, introduces the idea of isotopes.
The thyroid, bones, heart, liver, and many other organs can be easily imaged, and disorders in their function revealed.
In reality, the Bible makes no claim as to the age of the earth, although it does establish a minimum age.
This page examines some of the history of the controversy—what the Bible actually says and does not say—and the scientific evidence surrounding the age of the earth.
In some cases radiation can be used to treat diseased organs, or tumours.
Five Nobel Laureates have been closely involved with the use of radioactive tracers in medicine.