Donald Cline must have thought no one would ever know. Then DNA testing came along.
23andMe’s 4-million-person database reveals how many people are living with undetected chromosomal anomalies.
Tools meant to reunite families are now being “used essentially to get families to put their members in jail.”
As a cancer patient, she had received cord-blood cells from an anonymous donor. The DNA from those cells led her to him.
A new technique can preserve the organ outside the human body for at least 27 hours.
A tiny ear bone from more than 4,000 years ago is shaping the story of migration and heritage in India.
Urinary-tract infections were once easy to cure. Then they started becoming resistant to antibiotics.
In Australia, one cat seems to have destroyed an entire bird sanctuary.
Using DNA, genealogists finally confirmed the identity of the “Belle in the Well,” found 38 years ago.
Ticks use their saliva to create a “lake of blood” inside their hosts.
A growing body of research has documented the health risks of getting certain breeds fixed early—so why aren’t shelters changing their policies?
When a New York woman gave birth to twins after IVF, neither baby was related to her, or to each other.
The tiny population of wolves on Isle Royale descended from a much larger group. What if that helped doom them?
The average hospitalized patient endures 350 alarms each day.
A fecal-transplant patient has unexpectedly died just as the FDA is deciding the future of the unconventional procedure.
Can doctors teach people how to parent?
After becoming a sperm donor, Tim Gullicksen wanted to get to know his donor kids. Now he invites them all out to a lake in California every summer.
It’s been genetically unchanged for at least 900 years.
The highest levels of microplastics are found more than 650 feet below the surface.
He Jiankui chose a famous mutation to edit into human embryos. Scientists are still trying to figure out everything it does.
How did they all die at once?