Despite all the advances modern science has brought, people still tend to talk about the good old days. Things like how long humans used to live often get thrown into the discussion. They claim that Adam lived to the age of 970 and that Bhishma fought in the Kurukshetra war at the age of 108. This is quite unbelievable, as, logically, people had very short lifespans. For a long time, even into the 1900s, life expectancy was about 32 years.