Expert: Walter Hintz - 6/2/2006

Question
hi Walter,

I have two questions
1.) Why does a person floats on a liquid(especially water)after death(if the person got drowned)?
2.) How does the forensic scientists measure the difference of the teeth of each person?

thanks for your time  

Answer
1. Upon the death on the individual decay brings about the formation of methane gas bloating the person and increasing bouyancy

2. I cannot really answer this but remember that everybody has a different pattern with respect to teeth so I suppose the all kinds of measurements can be made.