Biology carbon dating
The radiocarbon birth dating method can tell the birth date of the person regardless of the time of (extraction).
Of all stable amino acids, aspartic acid has one of the fastest racemization rates and is therefore the amino acid most commonly used for age estimation....[T]eeth are the tissue of choice for age estimation analysis.
There are many sports restricted to players of a certain age (e.g.
16 and under, 18 and under, etc.) What if a person is older and fakes his birth certificate to say that he is younger? Can we determine such a person's age by radiocarbon dating methods or other means? That doesn't mean we can't make a decent guess by other methods.
Spalding and her postdoc advisor Jonas Frisén had a hunch that a pulse of radioactive carbon created by above-ground nuclear tests during the Cold War could help solve the riddle.
“A geopolitical phenomenon—this Cold War bomb testing—has, in a way, put a date stamp on everything and everybody,” Spalding says.