Changes

'''Half-life''' is the time it takes for half of the original sample of a [[radioactive]] [[isotope]] to decay.<ref>Wile, Dr. Jay L. ''Exploring Creation With Physical Science''. Apologia Educational Ministries, Inc. 1999, 2000</ref>  Knowing these decay rates are important for dating, such as with [[carbon|carbon-14]].

'''Half-life''' is the time it takes for half of the original sample of a [[radioactive]] [[isotope]] to decay.<ref>Wile, Dr. Jay L. ''Exploring Creation With Physical Science''. Apologia Educational Ministries, Inc. 1999, 2000</ref>  Knowing these decay rates are important for dating, such as with [[carbon|carbon-14]].

==Other Uses==

==Video Game Series==

'''Half-Life''' is also the name of a popular [[video game]] franchise. It is composed of two games, Half-Life and Half-Life 2, both of which are first person shooter style games.([[ESRB]] rating: M).

'''Half-Life''' ([[ESRB]] ratings: M) is also the name of a popular [[video game]] franchise. It is composed of two games, Half-Life and Half-Life 2, both of which are first person shooter style games.

==See Also==

==See Also==