Archaeologists have finally uncovered the purpose of four mysterious stone megastructures scattered across Europe. These ...

Humans have been competing to touch the sky since the Great Pyramid held the height record for nearly 4,000 years, but modern ...

There are three ways to look for evidence of alien technological civilizations. One is to look out for deliberate attempts by them to communicate their existence, for example, through radio broadcasts ...

A story that went viral this week reports that astronomers finally found E.T., but those aren't the facts. CNET's Eric Mack talks with the astronomers involved about what is still a very interesting ...

The excavation of a Stone Age community center in Ukraine is helping explain why large groups of tens of thousands of people flourished and then fell more than 5,000 years ago. The "megastructure" ...

The China Earthquake Administration has selected a structural health monitoring (SHM) system from CGM Engineering Inc. to help engineers conduct research on seven recently constructed megastructures.