MacDougall hoped to discover whether a soul had mass with his macabre experiment, and if so, how much. His tests with ...

Researchers have manipulated chromosomes inside a stem cell to produce mice with two biologically male parents. Stem cell biologist Katsuhiko Hayashi of Japan's Osaka University and his team say they ...

A hormone-free pill, called YCT-529, that temporarily stops sperm production by blocking a vitamin A metabolite has just concluded its first safety trial in humans, getting a step closer to increasing ...

Chinese scientists have performed the first pig-to-human lung transplant ever, with the organ remaining functional for over a week after surgery.

British scientists have created eight children in a lab over the past two years whose health continues to be monitored in hopes of determining if research methods that incorporate a third parent in ...