Short but informative video for radiocarbon dating
Short video (7.37) about ionising radiation with a description of half-life at the end.
Ionising radiation and DNA
A short tutorial (3.07) on how radiation causes damage on a cellular level.
How carbon dating works
Radiocarbon dating - Turin shroud
The Chemistry of the Turin Shroud. One of the Periodic Table of Videos from the University of Nottingham