Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. Egypt’s Great ...

This is a painting that dates back thousands of years to Ancient Egypt. Artworks like this tell us a lot about the time and place that they come from. This painting shows a farmworker using a shaduf.

It almost never rains in Egypt, where approximately 95% of the land is desert. For that reason, almost all the drinking water and water required for farming comes from the Nile River. If you know that ...

WE HUMANS sure love to measure and rank stuff. Over the course of our civilisation, we have measured and ranked pretty much anything worth doing like the biggest continent (Asia), the tallest ...