Add Yahoo as a preferred source to see more of our stories on Google. This 2014 image of a tropical storm from the International Space Station clearly shows Earth's curvature. NOAA/Getty Images An ...

Unless you're on the fringes, it's taken for granted that Earth is round, but if you play with the numbers just right, other shapes are possible.

Ever since the ancient Greeks first made observations of the circular Moon and the skies, scientists have known that the Earth is a sphere. We've all seen beautiful images of the Earth from space, ...

For thousands of years, scientists and astronomers have gathered evidence showing that Earth is a sphere. This video explores some of the most convincing observations, including how shadows behave ...

The only way to see the curve of the Earth is to fly more than 6 miles (10 kilometers) above its surface. When you purchase through links on our site, we may earn an affiliate commission. Here’s how ...

Curious Kids is a series for children of all ages. If you have a question you’d like an expert to answer, send it to curiouskidsus@theconversation.com. The answer is all about perspective. Humans are ...