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Libby later received the Nobel Prize in Chemistry in 1960 for the radiocarbon discovery.

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The radiocarbon method was developed by a team of scientists led by the late Professor Willard F.

Libby of the University of Chicago after the end of World War 2.

During the period of a plant's life, the plant is taking in carbon dioxide through photosynthesis, which is how the plant makes energy and grows.

Animals eat plants, and some eat other animals in the food chain.

Eventually, a particle is emitted from the carbon 14 atom, and carbon 14 disappears.

Most of the carbon on Earth exists in a slightly different atomic form, although it is chemically speaking, identical to all carbon.

We know that it is older than Christendom, but whether by a couple of years or a couple of centuries, or even by more than a millenium, we can do no more than guess." [Rasmus Nyerup, (Danish antiquarian), 1802 (in Trigger, 19)].

The person who wrote these words lived in the 1800s, many years before archaeologists could accurately date materials from archaeological sites using scientific methods.

Rasmus Nyerup's quote reminds us of the tremendous scientific advances which have taken place in the 20th century.

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