A Challenge to the Theory of Climate Change

As many of you may know, our three founders and many of our employees got our start in Radiation Protection (a.k.a  Health Physics) in college by earning degrees in “Radiological Sciences and Protection” at UMass-Lowell. This education invigorated our passion and devotion to our profession through the influence of three of our passionate mentors; Drs. Ken Skrable, George Chabot, and Clayton French. Without their passion and influence, our paths would most likely have been quite different!

Well, our three mentors have performed a fascinating analysis of the trending of radioactive Carbon-14 in atmospheric CO-2 since the beginning of the industrial revolution. This is based on the fact that fossil fuels (crude oil) contains virtually no C-14 because of its age and progression of radioactive decay. The basic premise of the analysis by our mentors is that if the increasing CO-2 levels in the atmosphere is principally from burning fossil fuels, then the levels of C-14 within CO-2 should decrease in a predictable manner given that we can estimate the consumption of fossil fuels annually (which we know). Their analysis makes a compelling case that much of the atmospheric levels of CO-2 are not from the anthropogenic consumption of fossil fuels. This case clearly challenges the premise of climate change being caused from the burning of fossil fuels. In fact, their conclusion is:

“Our results show that the percentage of the total CO2 due to the use of fossil fuels from 1750 to 2018 increased from 0% in 1750 to 12% in 2018, much too low to be the cause of global warming.”

Their copyrighted paper published in the Health Physics Journal entitled, “World Atmospheric CO2, Its 14C Specific Activity, Non-fossil Component, Anthropogenic Fossil Component, and Emissions (1750–2018)” can be found here:


This E copy of the paper contains links for references as well as an 8 page table of all of the data whose link is:


Please contact RSCS if you would like a copy of the detailed mathematical derivation of the elements of the model.

Other persons who might have an interest in our paper can obtain a preprint or copy of our paper at the Heath Physics Journal website: