It's the ranking of primary human needs for psychological well-being as described by American psychologist Abraham Harold Maslow, and is usually illustrated not unlike the old-school food pyramid ...

A new study suggests that the first of seven key pyramids in Egypt, the Step Pyramid of Djoser, was built using a hydraulic lift. Dated to about 4,500 years ago, this would move up the ...

Little is known about Djoser, but the fact that he was able to build such a massive and innovative structure as the Step Pyramid suggests that during his reign Egypt was politically stable ...