Fossil fuel emissions have been increasing through the years and putting a strain on the processes of carbon dating researchers. The researchers that monitor the rising levels of carbon dioxide have experienced a conflict in their process. The burning of these fossil fuels have resulted in a significant shift in the composition of carbon isotopes in the air of the Northern Hemisphere, canceling out a useful signal from nuclear-weapons testing. This new conflict could make it difficult to tell if something is modern or 1,000 years old, and poses effects on the future of radiocarbon dating procedures.
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