For decades, the search for extraterrestrial intelligence has been guided by one hopeful assumption: somewhere in the galaxy, another civilization may be trying to reach us. Radio telescopes have ...

Stretching across the coastal plains of southern Peru, the Nazca Lines have captivated and confounded the world for nearly a century. From the obsessive genius of Maria Reiche to alien conspiracies ...

Could ancient humans really have built the pyramids without extraterrestrial help? Or do such questions reveal more about modern anxieties than the past itself? The idea that aliens assisted the ...