For decades, scientists have struggled to study this moment in humans because of ethical restrictions and limited access to ...

Here’s what you’ll learn when you read this story: With more than 100,000 people in need of an organ transplant in the U.S. alone, scientists have turned toward perfecting human-animal chimeras as a ...

Implantation, one of the most poorly understood phases of early human development, occurs in the depths of the womb, at a time when embryos are micros.

A team of scientists has just gotten a closer peek into one of the earliest and most fundamental steps of creating a human life. Research out today highlights how they captured—for the first ...

(The Conversation is an independent and nonprofit source of news, analysis and commentary from academic experts.) Monika Piotrowska, University at Albany, State University of New York (THE ...

In a Maryland operating room one day in November 2025, doctors made medical history by transplanting a genetically modified pig kidney into a living patient. The kidney had been engineered to mimic ...