The iconic Pyramids of Giza are already one of the world's greatest enigmas. Last month the mystery deepened when a team of Italian scientists said they found a vast city stretching thousands of feet ...

A new study argues that conditions necessary for intelligent extraterrestrial life may be far less common than once thought. Planets lacking plate tectonics and sufficient carbon dioxide and oxygen ...

The Search for Extraterrestrial Intelligence (SETI) is regularly plagued by the fact that humanity has a very limited perspective on civilization and the nature of intelligence itself. When it comes ...

"Although ETIs might be rare, there is only one way to really find out, and that is by searching for it." A new study argues that conditions necessary for intelligent extraterrestrial life may be far ...