US President Donald Trump said on Thursday he is ordering federal agencies to begin “identifying and releasing” government ...

Among the most persistent claims is that extraterrestrials assisted in the construction of ancient civilizations.

If life exists elsewhere in the universe, researchers at the University of Washington are finding the clues on Earth to help understand where to look for it.

At a remote and barren Sahara desert site in Niger, scientists have unearthed fossils of a new species of Spinosaurus, among ...

Life on Earth may not have started here at all. A scientist says alien intervention is unlikely but still possible, reshaping the debate on our true origins.

If the world exploded, what proportion of the rocks floating in space would have evidence of life? (continued) ...

Fossils have a way of rewriting family trees, pulling back the curtain on creatures that feel alien and oddly familiar, like ...

While idea may violate Occam’s razor, “it remains a speculative but logically open alternative,” says biologist Robert Endres.

New method reveals chemical signs of early microbial life in ancient Earth rocks, showing photosynthesis evolved much earlier than believed.

THE prehistoric “super carnivore” megalodon was bigger than previously thought, growing to a whopping 80ft and weighing 94 tons. The beast would have been four times bigger than the ...

Thousands of alien species could invade the Arctic, warns a new study. Warmer temperatures and more tourists make it easier ...

The Ediacara Biota are some of the strangest fossils ever found—soft-bodied organisms preserved in remarkable detail where preservation shouldn’t be possible. Scientists now think their survival in ...