The food pyramid released last week is inverted, showing red meats and vegetables at the top with grains and breads at the bottom.

Freestanding clusters of twenty gold atoms take the shape of a pyramid, researchers discovered. This is in contrast with most elements, which organize themselves by forming shells around one central ...

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 ...