From the Greys to the Nordics, these aliens appear frequently across abduction stories and science fiction tales.

Watch a slideshow of some of the invasive species now affecting Europe Deadly fish, exotic ladybirds and huge jellyfish are just some of the invasive species which threaten the environment and economy ...

From a podcast studio in London this week, an 89‑year‑old physicist with long-standing CIA links calmly told his host that US insiders believe the government has recovered 'at least four types' of ...