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 ...

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 ...

Current issues are now on the Chicago Journals website. Read the latest issue.Current Anthropology is a transnational journal devoted to research on humankind, encompassing the full range of ...

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 ...

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 ...

All developmental stages are tiny during the first 4 weeks after conception, and between fertilization and implantation they are virtually invisible. A human egg is about as big as the period at the ...

Ovulation fatigue and exhaustion can occur during and after ovulation. It’s associated with fluctuations in hormones, including estrogen and progesterone. If you feel tired or exhausted in the weeks ...

You may experience mild cramps or pain around the time of ovulation. This pain is medically known as mittelschmerz. Mittelschmerz is a German word meaning “middle pain.” Not every woman will have ...