See more of our trusted coverage when you search. Prefer Newsweek on Google to see more of our trusted coverage when you search. When it comes to male fertility, not all sperm are created equal. In an ...

There are countless facts regarding sperm, the male reproductive cells. For this reason, it can be hard to split truth from myth. Although many people have some knowledge about sperm, many ...

You may know it takes one sperm and one egg to make a baby but, if you're like most people, you might not remember much else about sperm from biology class. If infertility is an issue for you and your ...

Human semen not only accumulates genetic mutations with age; as the percentage of sperm carrying potentially serious mutations increases, so does the risk of developing diseases in offspring. This is ...

Researchers from the EHU-University of the Basque Country have developed a robust protocol to detect the molecules involved ...

Many of us still believe some pretty unscientific, long-standing myths about sperm, semen, and male fertility. From sperm speed to nutritional makeup, here are 12 of the most popular urban legends. In ...

Until recently, the only way to make eggs or sperm was the old-fashioned way: in the ovaries and testes. In the not-too-distant future, it may be possible to use cells from almost any part of the body ...

First it was human embryos. Now scientists are trying to develop another way to modify human DNA that can be passed on to future generations, NPR has learned. Reproductive biologists at Weill Cornell ...