Companies like Phoenix Tailings, which recently began producing metal in New Hampshire, are using new processing methods to ...

For 5,000 years scholars, generals, and mystics have been fascinated by the Egyptian pyramids. That obsession persists in the modern age. Today the Pyramids of Giza are surrounded by desert. But 4,600 ...

Egypt, third millennium b.c. The Great Pyramid of Giza is both the oldest of the Seven Wonders and the only one still standing. Built by the pharaoh Khufu (reigned ca. 2551–2528 b.c.) to serve as his ...

Rising just over 60 meters, the Menkaure Pyramid is the youngest of the Giza pyramids and unique for its extensive use of Aswan granite, which has fueled decades of debate about its construction and ...