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

The Rwenzori Mountains National Park covers nearly 100,000 ha in western Uganda and comprises the main part of the Rwenzori mountain chain, which includes Africa's third highest peak (Mount Margherita ...

What is the longest river in the world, the Nile or the Amazon? It’s a question that has fuelled debate for years. Now, an expedition into the South American jungle aims to settle it for good.

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 ...