From space, they look like perfect circles carved into Earth by something impossible. One is a 25-mile eye in the Sahara, ...

Blue holes, the name for collapsed limestone caves filled with sea water, also serve as important repositories for storm data due to sediments captured with in their low-oxygen bottom layers. A new ...

Earth’s strangest circles look like scars, eyes, and portals when seen from space, but each one hides a very different story.

Add Yahoo as a preferred source to see more of our stories on Google. Something Truly Scary Discovered at The Bottom of Belize's Great Blue Hole An expedition to the bottom of the Great Blue Hole off ...

The Great Blue Hole is up to 125 meters deep and approximately 300 meters wide, situated in the very shallow Lighthouse Reef, an atoll off the coast of Belize. The hole was formed from a stalactite ...

Add Yahoo as a preferred source to see more of our stories on Google. Tropical cyclones in the Caribbean are getting more frequent — and could increase significantly in the coming decades, evidence ...

Tom has a Master's degree in Journalism. His editorial work covers anything from archaeology and the environment to technology and culture. Tom has a Master's degree in Journalism. His editorial work ...