Earth’s deep past leaves plenty of unanswered questions. None currently proves an alien visit, but scientists know the ...

Claims that aliens are already here are everywhere, but proving them is another matter. The strongest cases become more ...

Senior figures from inside the U.S. military and intelligence world are now openly suggesting that the government has encountered technology and even “biologics” that are not human, even as official ...

A lengthy Defense Department review of U.S. government activities related to “unidentified anomalous phenomena,” more commonly known as UFOs, has found no evidence that extraterrestrial intelligence ...

Artificial intelligence may have a far stranger origin than Silicon Valley's technological revolution suggests, according to ...