Pregnancy

About 10 percent of U.S. abortions happen after the first trimester.

Miscarriages are common, but the majority of Americans still think they occur rarely, a new survey finds.

Obstetric ultrasound has a fascinating history, in both technical and social terms.

What exactly do we mean when we talk about a "fetal heartbeat" at six weeks of pregnancy?

What scientists know about fetal pain.

Pregnancy is possible from the start of ovulation.

This phenomenon is called "superfetation."

Milk isn't the same across species. Here's the science of why babies shouldn't drink cow's milk until they're older.