Tagged With sperm

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In preparation for the upcoming Olympics in Brazil, a British long jump champion is planning to freeze his sperm just in case he contracts Zika. It's meant as a precaution to prevent any future children from developing birth defects, but in reality it's a complete overreaction based on unfounded fears.

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Fruit flies have enormous sperm. This is a well known fact in the scientific community — so well known, in fact, that there's a name for it: the big sperm paradox. But the massive, spermy problem has long confounded scientists, who couldn't figure out why such a tiny creature needed such humongous baby batter soldiers. Until now.

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Ejaculation may feel like a glorious mess, as uncontrollable as an avalanche or a runaway train. In reality, it's a tightly choreographed court dance: integrating three different branches of the nervous system, triggering cascades of contractions in smooth and striated muscles, all accompanied by the electrical storm of orgasm. Here's how it works.