Thanks to our friends at RadioLab, you now know why men produce so much sperm. In today's episode of this fascinating documentary series about the human body, Sir Robert Winston takes us through the perilous journey sperm must embark in order to fertilize an egg, the odds stacked up against an egg traveling down the fallopian tubes, the complex evolutionary process of competition and cooperation between mother and parasite/child, the stages of fetal development and the changes that the mother undergoes as her body readies itself for that experience of reproduction unique to women. Not sure who's got it better...To watch the entire documentary, download the Veoh Web Player.
Oh, did I forgot to mention you'd see a live birth :) ?
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