According to this study published in Nature, the most significant number of years a human can live is between 120 and 150 years, but not more than this “absolute limit” on the human life span. The Bowhead whale is the longest-living mammal on the planet, with a lifespan of up to 200 years. Interestingly, ancient Sumerian, Hindu, and Biblical literature depict people who lived thousands of years ago. According to Biblical records, those interested in ancient history may be familiar with Methuselah, a guy who lived 969 years. He is described as the son of Enoch, the father of Lamech,