Machu Picchu, Peru sits in rugged terrain far from flat land. Steep mountain paths are the only way to reach it. This video ...

For decades, scientists have searched the skies for signs of extraterrestrial technology. A study from EPFL asks a sharp question: if alien signals have already reached Earth without us noticing, what ...

Former U.S. President Barack Obama has clarified comments he made about alien life on a podcast over the weekend. He said he ...