Is it true that human beings are biologically setup to live to be around 120 years old?
Why does 120 years seem to be the limit for the human lifespan?
Theoretically, how long can a human live? Is it scientifically possible to extend the human lifespan? How would earth be different if humans had an average lifespan of 200 years? What is the life expectancy of the world's oldest person? From birth, what are the odds of a person living until at least 70 years old? What is the estimated age of mankind on earth? Is science that can drastically extend the human lifespan a reality? How long will it be before the earth will not be able to sustain the human population? Which animal has the longest lifespan? How long will the human species last? What percentage of the U.S. population lives to the life expectancy age? What is the optimal age in life? How would the world be different if the average human life span were 200 years? What is a formula to live for 100 years? How is earth 6000 years old when ancient people in the Bible lived for hundreds of years? Is there any evidence for or against the incredibly long lifespans cited in the Bible? If the vital organs of human beings were replaced with prosthetics or bionics, could they live longer than 100 years? What is the demography of aging? What is the ideal life expectancy for humans? Why do dogs have such short lifespans? Could humans achieve immortality within the next 100 years? What is the key to longevity? Life expectancy in history was quite low. If you count only the people that reached a certain stage in life, what would the expected life length be? In 1809 many countries of the world had a lifespan <40 years. Was it because of high child mortality rate only? Why is an aging population a problem? Why do some animals live longer than others? What was the lifespan of an average large dinosaur, say a t-rex or a brontosaurus? What is the secret to living 100 years? Why is the age of retirement 60 years in India? How long would you live if you didn't have to worry about aging?