I heard a lecture once from an expert on "aging". While the human life expectancy has risen over time - the average age one can be expected to live, interestingly human life span has remained constant for thousands of years. Scientists put human life span, the longest possible length of a human life, at...120 years! I remember thinking at the time of the Jewish birthday greeting - may you live to 120 - amazing!
U.S. asks Uzbekistan to join anti-ISIS coalition (Reuters)
from the article: The Jewish birthday blessing that teaches us to count