For the last hour, in a backroom of a gun range in Arabi, Louisiana, I’ve been building Luigi Mangione’s gun. Well, not his, in the literal sense. The not-quite-finished firearm in my hands is very ...

3DBio Therapeutics, a biotech company in Queens, said it had for the first time used 3-D printing to make a body part with a patient’s own cells. By Roni Caryn Rabin A 20-year-old woman who was born ...