This one’s a win for goodwill and technology, a fine example of how how ideas can traverse diverse spaces and change lives. The high cost of human prostheses has long been a challenge for amputees and people born with missing limbs, but 3D printers have begun to change that. Unlike traditional manufacturing, 3D printing can create an object in almost any shape by reading a digital model. Using cheap materials, companies and non-profits can now print simple prosthetic hands and arms for as little as $50. And animals like Grecia and Derby, and now Fred, stand to gain, too.