Three types of carbon occur naturally in living material: C12, C13 and C14.Carbon14 (C14) is unstable and present in a very small percentage relative to the other components.Current understanding of the history of life is probably close to the truth because it is based on repeated and careful testing and consideration of data.
In the past 150 years they have not found any fossils that Darwin would not have expected.
Sedimentary rocks are rarely useful for dating because they are made up of bits of older rocks.
Uranium is present in many different rocks and minerals, usually in the form of uranium-238.
Radiocarbon dating provides us with the opportunity to “order time.” Determining when something happened based on the age of land formations or artifacts, or figuring out in what order certain events happened, can be crucial to understanding human culture and environmental changes.
Radiocarbon dating has significantly changed humans’ approach to history during the last 50 years.