When in the Course of human events, it becomes necessary for one people to dissolve the political bands which have connected them with another, and to assume among the powers of the earth, the separate and equal station to which the Laws of Nature and of Nature's God entitle them, a decent respect to the opinions of mankind requires that they should declare the causes which impel them to the separation.
Some researchers believe that there's a limit on how many years a human being could live, the maximum being 125. Others see a world in which we have centenarians walking around with people who have lived for 500 or 1,000 years. Diseases related to aging, like dementia and heart disease, currently block us from reaching that point. Our body parts wear out from use.
1 A girl born in 2012 can expect to live to 73, a boy can expect to live to 68. 2  This is six years longer than the life expectancy for a child born in 1990. 3  Japanese women have the highest female life expectancy in the world at 87. 4  Iceland has the highest male life expectancy-the average man lives to 81.