While sexual reproduction is the predominant strategy among animals, some species have evolved the ability to reproduce asexually ...

One of the most surprising findings was that the male stick insects had completely lost their reproductive function. In most ...

CNN claimed there is skepticism about new HHS guidance that clarifies the differences between men and women, while failing to ...

A recent Trump executive order defines sex based on gamete size. But the order oversimplifies genetics, hormones and reproductive biology.

The U.S. Department of Health and Human Services has announced it will eliminate "gender ideology" from its policies, ...

The U.S. Department of Health and Human Services said Wednesday that the agency has issued guidance recognizing only two ...

The U.S. Department of Health and Human Services issued guidance updating its official definitions of terms such as sex, ...

The president’s executive order signaled an intention to narrowly define the sexes, but experts say he is oversimplifying the ...

The guidance defines female as a "person of the sex characterized by a reproductive system with the biological function of producing eggs (ova)," and male as a "person of the sex characterized by a ...

The Department of Health and Human Services, under the leadership of Robert F. | The Department of Health and Human Services, ...