3D Printing

Barr: Chicken Little Challenges to 3-D Guns

Probably no 27 words in our founding documents have caused so much controversy as have those comprising the Second Amendment’s guarantee of the right to keep and bear arms; except, perhaps, the ten words in the First Amendment that protect freedom of speech.

A Liberator pistol appears next to the 3D printer on which its components were made Defense Distributed

Scientists Create First 3D-Printed Human Corneas

Newcastle University scientists have created the first 3D-printed human corneas using a combination of human cells, alginate, and collagen, potentially creating an “unlimited supply” of corneas to treat blindness for millions of people.

The research team used human embryonic stem cells to grow retinal cells on a thin plastic scaffold and then transplanted the "engineered tissue" into two sufferers of age-related macular degeneration who can now read again, albeit slowly