The antineutrino flux from radioactive uranium, thorium, potassium-40, etc. on the earth’s surface is of the order of 106 antineutrinos per square centimeter per second. The flux of neutrinos from the sun is four orders of magnitude larger. Larger than that would be the cosmic background of neutrinos and the possibility of a nearby supernova. Recent physics literature contains theories in which the neutrino mass is coupled to the neutrino density via a so-called acceleron field. This acceleron field is hypothesized to resemble the Higgs field, and to change strength due to neutrino couplings and variation in neutrino density. The radiocarbon evidence for a nearby supernova is discussed and related to the possibility that such a supernova showered the earth at the time of Noah’s Flood. This would contribute to accelerated decay and provide evidence that radioisotope data can be consistent with a biblical timescale.