Scientists are editing pig embryos and injecting human stem cells in a bid to solve the organ transplant crisis, but the research raises profound ethical questions about what it means to be human.

Add Yahoo as a preferred source to see more of our stories on Google. May 14—STEWARTVILLE, Minn. — A very different kind of "hog farm" is being built by United Therapeutics Corp. on the edge of ...

In a New York operating room one day in October 2025, doctors made medical history by transplanting a genetically modified pig kidney into a living patient as part of a clinical trial. The kidney had ...