The actual paper really just applies to plants. But there are also far more exceptions than just humans. Giant tortoises have effectively no known life expectan

The actual paper really just applies to plants. But there are also far more exceptions than just humans. Giant tortoises have effectively no known life expectancy, at least as a result of aging -- they do not age: http://en.wikipedia.org/wiki/Negligible_senescence http://en.wikipedia.org/wiki/Negligible_senescence