Spermatozoa are one half of the equation that equals human life, and those squirmy little swimmers play an important role in the survival of humanity by defying the odds and fertilizing eggs.
You already know the bit about how they latch on to an egg and try to break through, but did you know the woman's body creates cervical mucus, which helps sperm live for three to five days? Of course you did!
You're probably also aware that every ejaculation contains around 40 million to 2 billion individual sperm, but did you know sperm is only about 5% of the ejaculated fluid? The rest is seminal fluid which contains acids, fructose and lipids.
Sperm has been working perfectly for us since the very beginning, so there's no reason for us to use our scientifical powers on seminal fluid except when we want to resurrect dead sperm:
Doctors have successfully created an embryo using semen that was no longer living. They extracted the DNA from the sperm and injected it into the egg to create life.