For more than 20 years, the Silverpit Crater deep under the North Sea has been the center of a heated scientific controversy. Some geologists were adamant that an asteroid produced the nearly-perfect ...

In this series we choose 13 dramatically different rivers, each with its own unique characteristics, from the powerful Zambezi to the dry Hoanib River – a river that flows for only a few days a year.

Africa is the only continent with large, natural tropical lakes, and boasts around 1.3 million square kilometers of freshwater resources, including lakes, rivers, reservoirs, floodplains and swamps.

Gura river in Neri County is the fastest flowing river in Africa [Wilberforce Okwiri,Standard] My hiking escapades have taken me to dozens of destinations, but I have never done a riverbank hike. So I ...

Find the answer for Africa's longest river from the people who brought you the USA TODAY Daily Crossword Puzzle.

Retief Müller does not work for, consult, own shares in or receive funding from any company or organization that would benefit from this article, and has disclosed no relevant affiliations beyond ...