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Since the universe is estimated to be millions of years old, it was assumed that this equilibrium had already been reached.
However, in the 1960s, the growth rate was found to be significantly higher than the decay rate; almost a third in fact.
These findings suggested dramatic changes in the amount of radioactive carbon in Earth's atmosphere during the last Ice Age, much greater than previously thought, probably as a result of changes in the strength of the planet's magnetic field."Beyond about 20,000 years ago there are some dramatic swings in radiocarbon concentration, which means the age offset between the radiocarbon age and true calendar age can be up to 8,000 years," said Dr David Richards of the School of Geographical Sciences, University of Bristol, who made the study with colleagues in Arizona and Minnesota.Post questions, thoughts or simply whether you like the content.November 2017 In this Issue Articles - How to Achieve Ultimate PCR Optimisation Spotlight Features - Incubators, Freezers & Cooling Equipment - Balances & Strain Gauges - Proteomics, Genomics & Mic...It has been summed up most succinctly in the words of American neuroscience Professor Bruce Brew: that samples of moss could be brought back to life after being frozen in ice. That carbon dating deemed the moss to have been frozen for over 1,500 years.Now, if this carbon dating agrees with other evolutionary methods of determining age, the team could have a real discovery on their hands.