Effective range of radiocarbon dating

So, we have a “clock” which starts ticking the moment something dies.

Obviously, this works only for things which were once living.

Organisms capture a certain amount of carbon-14 from the atmosphere when they are alive.Various geologic, atmospheric and solar processes can influence atmospheric carbon-14 levels.Since the 1960s, scientists have started accounting for the variations by calibrating the clock against the known ages of tree rings.Popular presentations of human evolution show a rather smooth transition of fossils leading to modern humans.The impression given is that the dating of the individual fossils in that sequence is accurate enough to establish human evolution as a fact.

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