Evidence that the half-lives for double beta decay have varied during the history of the earth are discussed. Data for Tellurium-130 and Selenium-82 indicate an episode of variation occurred in the geologic history, possibly just prior to the Genesis Flood. Possible change in the strength of the nuclear force could lead to an associated change in nuclear phase from isoscalar to isovector pairing, and indicators in the scientific literature are highlighted to show the relevance.
