In reptiles, a simple temperature change can determine whether an egg develops into a male or female. This process is formally known as temperature-dependent sex determination (TSD), in which the sex ...

On the East Coast, Mason Neck State Park in Virginia has large numbers of bald eagles that have been roosting for centuries, ...

A new study on mayflies of the genus Ecdyonurus illustrates just how multifaceted and surprising reproductive behavior in ...

Tessa, a giraffe at the Cincinnati Zoo, is pregnant with her fifth calf. The baby giraffe will join the zoo's tower of four in October.

It’s a strange shift: After spending your whole life trying to avoid getting pregnant, you suddenly want to do so, and fast. But rather than making this change at the flick of a switch, many fertility ...

DEAR MAYO CLINIC: I found out during my pregnancy that I have mitral valve stenosis. How common is valve disease, and what should I know about it? ANSWER: Valve disease affects how blood moves through ...

Matte’a Brooks takes care of her daughter inside their home in southern Illinois. Brooks signed up for Medicaid after finding out that her daughter was on the way. Cara Anthony KFF Health News When ...

Help our team continue their reporting on referrals to law enforcement for alleged drug use during pregnancy by sharing your story. Reporting contributed by Shoshana Walter and Jill Castellano About ...

The state is the first in the United States to require paid leave for prenatal care. While some women are using the time off for medical appointments, others don’t know that it’s available. By Emma G.

Prenatal care can make a huge difference to the long-term health of both the parent and baby. Every state offers health coverage to lower-income pregnant women who might otherwise go uninsured. When ...

You wake up together, you eat together, you sleep together. Sometimes you shower together. You know that it’s no longer love, exactly, but you’re too deeply entangled to leave. He knows your rhythms, ...

The psychologist B.F. Skinner (1904-90) is remembered for his principle of reinforcement. His idea was simple. When our actions are rewarded by their consequences, we tend to repeat them. When they ...