A theory of human life

[sethdallob]

Is it possible that humans live longer, on average today, because there are less radioactive emissions than there were in ancient times. Since all of these evil emission-producing elements have given half-lives, wouldn't it make sense that early humans had shorter lives because they were constantly bombarded by radiation many times more powerful than today's?

Seth

P.S. I have the stomach flu, so if my thoughts are less than coherent, don't blame me. :-)