Many state legislatures are seriously considering human embryos at the earliest stages of development for legal personhood. Total abortion bans that consider humans to have full rights from the moment ...

The majority of fertilized eggs die and are resorbed into the body. ZEISS Microscopy/Flickr, CC BY-SA As an evolutionary biologist whose career has focused on how embryos develop in a wide variety of ...

The process of human ovulation has long been shrouded in mystery. We know that once or twice a month, women release tiny eggs from their ovaries into their fallopian tubes, which usher eggs into the ...

Last week, the Department of Health and Human Services released a draft of its latest strategic plan, which will guide the agency from 2018 to 2022. Near the top of the document, the agency presents ...

The Supreme Court recently declined on procedural grounds to enjoin a Texas law prohibiting abortions after the sixth week of pregnancy. The court stated unequivocally that its decision was "not based ...

New Haven, Conn. — 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 ...