Other corrections must be made to account for the proportion of throughout the biosphere (reservoir effects).Additional complications come from the burning of fossil fuels such as coal and oil, and from the above-ground nuclear tests done in the 1950s and 1960s.Green plants absorb the carbon dioxide, so the population of carbon-14 molecules is continually replenished until the plant dies.
That included protecting the samples, avoiding cracked areas in the bones, and meticulous pre-cleaning of the samples with chemicals to remove possible contaminants.
Love-hungry teenagers and archaeologists agree: dating is hard.
This rather complex formula shows you how to solve this puzzle using accepted scientific methods.
Researchers have found a reason for the puzzling survival of soft tissue and collagen in dinosaur bones - the bones are younger than anyone ever guessed.
Since dinosaurs are thought to be over 65 million years old, the news is stunning - and more than some can tolerate.