Add Yahoo as a preferred source to see more of our stories on Google. Even if you don’t recall many facts from high school biology, you likely remember the cells required for making babies: egg and ...

This article was published in Scientific American’s former blog network and reflects the views of the author, not necessarily those of Scientific American This is the third and final installment of my ...

Even if you don’t recall many facts from high school biology, you likely remember the cells required for making babies: egg and sperm. Maybe you can picture a swarm of sperm cells battling each other ...

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