An experimental treatment significantly improves the quality of human eggs and increases the proportion that can be used for ...

Human bodies have to be built from a single egg cell that's fertilized by a sperm cell. Many rounds of cell division occur as the body is developing, and it seems that there are plenty of chances for ...

A new study identifies the defective function of CatSper, an ion channel controlling calcium levels in sperm, as a common cause of seemingly unexplained male infertility. CatSper-deficient human sperm ...

It was good to read letter writer Ben White trying to address the key question that is too often bypassed in discussions about abortion. That is, when does life begin? It is key because we value human ...

The response to the coronavirus outbreak has rightly been about protecting human life. As a nation, we have taken extraordinary steps to protect public health and save lives. However, there is a huge ...

In a common metaphor used to describe human fertilization, sperm cells are competitors racing to penetrate a passive egg. But as critics have noted, the description is also a “fairy tale” rooted in ...