Earth is dotted with humongous, human-made structures that, to an alien eye, may be tell-tale signs of intelligent goings-on.

"It's a profound idea that we are looking at a map of material that could rain on nascent planets and potentially support ...

History Channel personality and extraterrestrial researcher David Wilcock, known for his 'Ancient Aliens' appearances, is ...

A female Anopheles quadrimaculatus mosquito takes a blood meal from a host. For millennia, this mosquito has spread malaria.

An analysis of fossil jaws belonging to octopuses that lived between 100 million and 72 million years ago, during the Late ...