Dr. Wendy Wolbach and her research colleagues have proven the connection between a meteor impact and a subsequent anomalous global cooling event known as the “Younger Dryas”. Approximately 12,800 years ago, near the end of the Pleistocene period, a period of cold climates and drought swept the earth. Scientists call this “Big Freeze” the Younger Dryas. This paper ties the impact and cooling events together. Dr. Wolbach and her research colleagues narrowed the date down to a 100-year range sometime between 12,835 and 12,735 years ago using Bayesian statistical analyses of 354 dates taken from 30 sites on more than four continents.