The process of making glass was already amazing. Take tiny grains of sand, melt them at staggering temperatures with other chemicals, then carefully cool it into a brand new solid, ready to be a vase, window, bottle, or bead. It's possible to make glass on your grill in the backyard but generally it's a skill reserved for craftsmen or factories. Then, there's MIT.

MIT's Mediated Matter Group has figured out a way to put molten glass through a 3D printer, creating beautiful sculptures. They call their system G3DP, and it is incredibly beautiful to watch.

From a reservoir heated to 1900 degrees Fahrenheit, the printer can lay down individual layers of melted glass, building it up into a finished sculpture. And the printer doesn't have to make straight lines or simple cylinders. The machine drizzles glass like honey into fascinatingly beautiful shapes.