Former health secretary Alan Milburn suggested he and the incoming prime minister have already ‘discussed privately’ the ...

The Cortisol-Testosterone Trade-off Nobody Explains When the body perceives sustained threat, a deadline that never ends, ...

Cortisol is bad. Testosterone makes you aggressive. Melatonin helps you sleep. Experts bust common hormone myths ...

Female mammals have long thought to be born with all the eggs they would ever have, but new research is challenging that consensus ...

Antenatal educator Megan Rossiter, author of Birth Power, tells Lisa Salmon how pregnant women can best take control of ...

From why it was created to whether it’s alive, here’s what to know about SpudCell, the latest advance in synthetic biology.

Hope is supposed to carry you through fertility treatment. But repeated cycles can turn hope into a threat. You will find out why, and what grounded hope looks like instead.

In PEOPLE’s exclusive clip from 'Baylen Out Loud,' Baylen Dupree gets emotional sharing her concerns about how endometriosis and Tourette syndrome may affect her ability to have children.

The world’s life-forms reproduce sexually in a bewildering variety of ways, even though scientists still aren’t sure why they bother.

A rewrite of quantum mechanics that includes the force of gravity could finally achieve one of physicists’ biggest goals and reveal the ultimate fuzziness of time ...

Richie Garcia is worried about the impact that robot umpires will have on their human counterparts. Major League Baseball introduced the Automated Ball-Strike System for regular-season play this ...

Major League Baseball's exhibition season gets underway Friday afternoon. Unlike most years, this round of spring training isn't just serving as a warm-up for the players, but rather will also serve ...