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 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 ...

A new U.S. Department of Health and Human Services (HHS) draft Strategic Plan for 2018 through 2022 contains verbiage defining human life as "beginning at conception" (i.e. with the fertilization of ...

Ovulation is the point in a woman’s menstruation cycle when the egg is released from the follicle in the ovaries and begins making its way down the fallopian tube to become fertilized. Similar to the ...

A pregnancy test detects the presence of the pregnancy hormone human chorionic gonadotropin, or hCG, in a person’s body. But the body doesn’t produce that hormone until several days after conception.

CLEVELAND, Ohio -- Sylwia Sierko of Mantua believes that life begins at conception. When she learned that her five frozen embryos had perished because of failures at University Hospitals' fertility ...

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 ...

Add Yahoo as a preferred source to see more of our stories on Google. As an evolutionary biologist whose career has focused on how embryos develop in a wide variety of species over the course of ...