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Later called Ötzi the Iceman, small samples from his body were carbon dated by scientists.
There is a small amount of radioactive carbon-14 in all living organisms because it enters the food chain.
But the calculated dates will only be accurate if the assumptions behind the method are correct.
Smallest Detectable Amount of Radiocarbon Sensitive instruments called acceleration mass spectrometers (AMS) are used to count the C/C ratio in a sample drops below 0.001 p MC?
Materials that originally came from living things, such as wood and natural fibres, can be dated by measuring the amount of carbon-14 they contain.
For example, in 1991, two hikers discovered a mummified man, preserved for centuries in the ice on an alpine mountain.