D printed “ghost guns” are back in the news, as one might have been used in the ambush killing of UnitedHealthcare’s CEO.

North American prices for PET bottle resin continued to slide through the third quarter as seasonal demand for bottled water ...

Weapons of the type allegedly owned by UnitedHealthcare murder suspect Luigi Mangione are untraceable and can be made using a ...

Court papers said the gun believed to be used in UHC CEO Brian Thompson's shooting likely was a ghost gun, an untraceable ...