Radioactive isotopes have many applications in science and medicine. One application is carbon 14 dating. This allows scientists to estimate the age of the remains of once-living things up to tens of thousands of years old.
- ↑ Wile, Jay L. Exploring Creation With Physical Science. Apologia Educational Ministries, Inc. 1999, 2000
- ↑ http://hyperphysics.phy-astr.gsu.edu/hbase/nuclear/cardat.html