The Seven Wonders (of the Ancient World) - with pics

Seven was considered a magic number by the ancient Greeks. So when it came to naming the most impressive constructions mankind had achieved at the time, it was a must that they settle on just seven. The historian Herodotus and the architect Callimachus of Cyrene made these lists, but their writing remained only as references. [...]

Science ABC - how the pyramids were built?

I’ve always been fascinated by pyramids; the Egyptians, the Aztecs, Mayans were three very different cultures and civilizations, from different parts of the world but they were all fascinated by this tipe of ‘building’. What is it that made them almost fanatical about building pyramids? Is it the geometric perfection of the structure? Or did [...]