Investigating whether a secret Egyptian tomb hides in the Grand Canyon sparks mystery, history, and wild speculation.

Smithsonian Cover-Up: Ancient Egyptians and Giants in the Grand Canyon In 1908, President Teddy Roosevelt wanted to declare the Grand Canyon off-limits to all timber and mining operations. It would ...

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, ...