Potassium-argon dating method is totally dependent upon the assumption that the A-36/A-40 ratio in the atmosphere has been invariant throughout geological time. Having shown this earlier, the author now offers evidence that argon-36 may well have been building up from zero since Creation. The strongest such evidence now comes from startling new data on cosmic rays surveyed in Science and Technology, November, 1968. Also, these same data serve to confirm the author’s earlier analysis showing that the radiocarbon clock points to Biblical Creation.