How should we represent humankind to aliens? With Pioneer 10 and 11, Nasa fell short. Next time, we must do better ...

A new study has shown the ovary’s tissues and cells play a bigger role than previously thought in how fertility wanes.

Scientists have used human skin cells to create fertilizable eggs capable of producing early embryos, an advance that could expand possibilities for fertility treatment, according to new research. The ...

Mike Shildt knows better than to stand in the way of progress. In the case of the Automated Ball-Strike (ABS) challenge system approved for the 2026 season on Tuesday by Major League Baseball’s joint ...

If the claims are true, the behavior by Homo naledi—a baffling, small-brained member of the human family tree—would pre-date the earliest known burials by at least 100,000 years. An Homo naledi group ...

Eggs contain 23 chromosomes needed for human development, which is half the usual number, because the sperm that fertilizes the egg will contribute the other 23 chromosomes. But skin cells and other ...

Stockholm — Mary E. Brunkow, Fred Ramsdell and Dr. Shimon Sakaguchi won the Nobel Prize in medicine Monday for their discoveries concerning peripheral immune tolerance. Brunkow, 64, is a senior ...

Mary E. Brunkow, Fred Ramsdell and Shimon Sakaguchi won the Nobel Prize in medicine on Monday for their discoveries concerning peripheral immune tolerance. (AP Video: Kostya Manekov, Lindsey Wasson) ...

Robot umpires are getting called up to the big leagues next season. Major League Baseball's 11-man competition committee on Tuesday approved use of the Automated Ball/Strike System in the major ...

Major League Baseball will implement a challenge system for balls and strikes in the 2026 season after the league's competition committee voted Tuesday to usher in the era of robot umpiring. Following ...