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

Some of the best science fiction TV shows ever premiered in the 1990s, and they are still worth watching today.

Oxygen has been the most important gas in our search for life among the cosmos thus far. On Earth, we have it in abundance ...

As a researcher, I still remember the discomfort I felt every time I had to sacrifice laboratory animals for an experiment. For decades, animals like mice, rats and pigs have been essential tools in ...