Scientific knowledge about the damaging effects of nuclear-weapons testing helped to end such tests. Those findings haven’t changed.

The "Nazca mummies" were discovered in Peru in 2015 and, due to certain peculiarities (size, shape, three fingers on each hand), were initially presented as possible extraterrestrial mummies. Various ...

On March 16, 1957, a 300-foot-long spacecraft allegedly landed in Alexandria, Virginia. Two police officers approached the craft — and out stepped a man who looked completely human. His first words: ...

Answers to some of those questions could finally become public after President Trump's call last week for the release of ...