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

geometry A New Pyramid-Like Shape Always Lands the Same Side Up A tetrahedron is the simplest Platonic solid. Mathematicians have now made one that’s stable only on one side, confirming a decades-old ...

A team of researchers has successfully built a strange four-faced pyramid named Bille that always lands on the same face—no ...

From the mud, straw, and gypsum mixtures of ancient Egypt's monumental pyramids to the sophisticated underwater material ...

Archaeologists are stunned after discovering what they believe could be an ancient city under the pyramids of Giza. A vast, prehistoric city buried beneath the Pyramids of Giza. It’s an extraordinary ...

This geometric figure — first identified by dentist William Bonwill in 1864 — is formed by connecting the two points where ...

Architects were given “a free hand” to create a socialist modernist paradise, says tour director Branislav Chrenka.

Critics of multilevel marketing businesses like Amway and Herbalife make bold claims. Bill Ackman, an institutional ...