Where the Earth’s core meets the mantle, there are two giant regions that have baffled geologists for fifty years. A new ...

"The universe is filled with a range of three-body systems, including the closest stars to Earth, the Alpha Centauri star ...

In the case of our 'string around the Earth' puzzle, the radius is being increased by 15cm, so we need to know that as a fraction of the original radius. So what is the radius to start with?

Inspired by The Atlantic's "Where in the World? A Google Earth Puzzle," we have launched an Asia-Pacific-specific version of the satellite imagery quiz. Using unaltered images found on Google Earth, ...

International scientists reveal that magma transports gold from the mantle to the surface by means of a sulfur complex.