However, the food pyramid was criticized for being overly vague and confusing, and was eventually replaced by MyPlate in 2011 ...

Waterpower may have given a big lift to builders of Egypt’s oldest known pyramid, the nearly 4,700-year-old Step Pyramid of Djoser at Saqqara. Ancient architects built a hydraulic system for hoisting ...

The pyramids may have been built using a sophisticated hydraulic system, according to a new study in Egypt. Evidence of ancient Egyptians using water pressure to lift stone blocks was discovered at ...

Developed more than a century ago to take advantage of a new communications technology, the inverted pyramid remains a controversial yet widely used method of reporting news and will have a future in ...