Do you remember the U.S. Department of Agriculture's food pyramid? Designed to help us all set healthy dietary priorities, the pyramid, debuting in 1992, urged us to indulge sparingly in fats.

Deep within Antarctica’s Ellsworth Mountains, a pyramid-shaped peak has intrigued scientists and conspiracy theorists alike.

(CNN) — For years, Egyptologists have hotly debated how the massive pyramids of ancient Egypt were built more than 4,000 years ago. Now, a team of engineers and geologists brings a new theory to the ...

One food pyramid wasn’t enough to fight the nation’s battle against the bulge, so government officials are hoping 12 new pyramids and an interactive Web site will finally help Americans choose a more ...

Ancient alien theorists who are certain secret pyramids are concealed all around the globe, think some may be hidden on Antarctica. Conspiracy theorists, in particular, point to a vaguely pyramid-like ...

Close your eyes and picture the Transamerica Pyramid. For most people living in the Bay Area, it’s an easy exercise. The pyramid appears in postcards, films and murals, and punctuates the city’s ...