A self-described science nerd is the latest American to get an experimental pig kidney transplant. Doctors at Massachusetts General Hospital announced Monday that Bill Stewart of Dover, New Hampshire, is faring well after his June transplant. It's not the only milestone they're marking in the quest to prove if animal-to-human organ transplants might really work. An earlier Mass General patient has been dialysis-free for a record seven months and counting thanks to a pig kidney. Based on those successes and lessons from some other attempts, U.S. health officials have cleared the first clinical trials of pig xenotransplants.

Doctors in Boston say they have transplanted a pig kidney into a 62-year-old patient. Massachusetts General Hospital said Thursday it's the first time a genetically modified pig kidney has been transplanted into a living person. Previously pig kidneys have been temporarily transplanted into brain-dead donors. Also, two men received heart transplants from pigs, although both died within months. The hospital announced the transplant Thursday and said the Massachusetts man is recovering well. Doctors says they expect the kidney to work for at last two years, and the patient could go back on dialysis if it fails.

Women over 35 and those facing serious diseases like cancer, lupus and sickle cell are among the most likely to turn to IVF to build the families they desperately want. But in Alabama, they are among those whose dreams are in limbo after three of the state's largest clinics paused IVF services. That happened in the wake of a state Supreme Court ruling that described frozen embryos as "extrauterine children." Doctors say the ruling has made an already difficult situation worse for these women. They hope that recent legislative efforts can protect Alabama clinics but worry that threats to IVF may emerge in other states.

According to Elon Musk, the first human received an implant from his computer-brain interface company Neuralink over the weekend. In a Monday post on X, the platform formerly known as Twitter, Musk said that the patient received the implant the day prior and was recovering well. The billionaire did not provide additional details about the patient. Neuralink reposted Musk's Monday post on X, but did not publish any additional statements acknowledging the human implant. Neuralink's device is about the size of a large coin and is designed to be implanted in the skull, with ultra-thin wires going directly into the brain. The initial goal of the so-called brain computer interface is to give people the ability to control a computer cursor or keyboard using their thoughts alone.