With the help of powerful computers, researchers discovered a four-sided shape that naturally rests on one side, and built a ...

“Bille” is the first-ever monostable tetrahedron, or a pyramid-like shape with four triangular faces that has one stable ...

Take a weeble, run it through a Minecraft filter, build it almost entirely of open air, and what have you got? It’s called a ...

The Tetrahedron concept drawing, cruising at a quick estimated top speed of 38 knots, looks more menacing than it does like a fun yacht. Jonathan Schwinge. View 9 Images 1 / 9.