Across ancient civilizations, pyramids appear in places that never contacted each other, from Egypt to the Americas. The ...

It was the primitive pyramid that caught my eye. I wondered what this construct — it looked like a child’s version of an Egyptian structure sculpted in some dark, pebbly Play-Doh — was doing in a ...

We've got ourselves a nutrition pyramid. Now we've got to figure out how to use it. It's not quite as simple as it looks, but it'll probably end up in every classroom in America. So say good night to ...

Ancient civilizations that never contacted each other somehow built near-identical pyramids. The reason is surprisingly simple. The pyramid shape is one of the strongest ways to build something tall ...