Relativity Space may have the biggest metal 3D printers in the world, and they're cranking out parts to reinvent the rocket industry here—and on Mars.

This organic-looking metal bridge in Amsterdam was 3D printed by welding robots. Best bridge ever, anyone?

While touring the China Pavilion at Paris VivaTech, Europe’s biggest tech fair, Chinese ambassador to France Deng Li’s attention was drawn not only to the flashy robot dogs and humanoids, but also to ...