The outer layer of skin is recycled about every two weeks.
An adult human liver replaces itself about once every year to year and a half.
Starting from the pulse around the years 1963 (see figure), atmospheric radiocarbon decreased with 1% a year.
Bomb pulse dating should be considered a special form of carbon dating.
As discussed above and in the Radiolab episode, Elements (section 'Carbon'), C by the biosphere, can be considered as a chronometer.
The step dissolution method was used, as one of several possibilities, to produce depositional subsamples.
A noticeable dead carbon presence is detected in the modern industrialized diet, and as a consequence in human metabolites.
A cell acquires its DNA on the day its parent cell divided, and it is kept intact by repair mechanisms until the cell dies.
Because DNA does not change over the lifetime of a cell, the extent of carbon 14 enrichment can be used to figure out the age of cells.The New Zealand curve is representative for the Southern Hemisphere, the Austrian curve is representative for the Northern Hemisphere.Atmospheric nuclear weapon tests almost doubled the concentration of C is slowly decreasing at a pace of 1% annually.While the general features of human beings can be described with pictures and models of body parts in various degrees of assembly, actual human beings exhibit a great deal of variability that is dictated by their physiology.In fact, many of your body parts are a different age than your birth age.Damage to self renewal processes leads to severe limitations on life style.