Conception can happen within minutes or up to five days after sex, depending on when you ovulate. Identifying your fertile window and when you ovulate can improve your chances of conceiving if you are ...

Re “When are the souls handed out?” Opinion, July 18 David Barash provides convincing scientific details that reveal there is no one moment of conception. Conception is a process. So maybe the ...

Catholics around the world — who are already observing the first week of the Advent season — mark the Solemnity of the Immaculate Conception on Thursday, Dec. 8, a day that signifies the conception of ...

Last July 25, David Barash, a professor of psychology at the University of Washington, said in a column that he had some bad news for “those opposed to abortion rights or to stem-cell studies.” These ...

Intrauterine insemination (IUI) is an alternative fertility method if you're having trouble getting pregnant. The procedure was previously known as artificial insemination, and you can do it without ...

An Alabama decision on I.V.F. has put an uncompromising principle on a collision course with political reality. By Emily Bazelon In vitro fertilization creates life, in the most literal sense. The ...