Standing at the base of the Great Pyramid, it is hard to imagine that this monument—which remained the tallest building in the world until early in this century—was built in just under 30 ...

One of the world's most popular lecturers on astronomy, Tyson is a familiar face to NOVA audiences, having hosted the miniseries Origins (PBS, 2004) and having been a featured scientist in prior ...

PBS’ “Nova” series examines the phenomenon of UFOs. A panel recently spoke with members of the media about the show, which is centered around a subject that has the whole world either ...