Teenagers develop 3D-printed bionic arm 30 times cheaper than existing prosthetics
Skopje, North Macedonia – Somewhere in downtown Skopje, amid the purring of engines and honking of sirens, 17-year-old Boris meanders the many streets and alleys of the city to make his way into an inconspicuous building not far from the plaza. He steps into a small makeshift workshop lined with shelves full of odd machines, wrenches, screwdrivers…