Katie has a PhD in maths, specializing in the intersection of dynamical systems and number theory. She reports on topics from maths and history to society and animals. Katie has a PhD in maths, ...

A strange peak in the middle of the Amazon rainforest may actually be the largest pyramid ever built in the ancient world. Known as Cerro El Cono, this massive, pyramid-shaped formation is cloaked in ...

When someone mentions the word “pyramid”, our minds instantly travel to the golden sands of Egypt, to the grand Giza plateau, to pharaohs and their stone monuments kissing the sky. Over time, pyramids ...