Invasive alien species (IAS) are a direct driver of global biodiversity loss, and can also affect societies, economies and human health. Maintaining up-to-date alien species inventories is important ...

Biological invasions have been identified as a major threat to nature with far-reaching consequences also for human-wellbeing. Mitigating and preventing further impacts requires knowledge about the ...

A former CIA-linked physicist's comments about 'four alien species' have reignited UFO conspiracy theories online.

Insider species claims: Hal Puthoff says high-level sources described four alien types linked to UFO crash recoveries, though he has not seen direct evidence. Political and public debate: The ...

A former CIA boffin has claimed that US agents investigating recovered UFO craft have identified four different types of alien species. In a new episode of the Diary of a CEO podcast, Dr. Hal Puthoff, ...

Defence scientist Hal Puthoff has claimed the US is holding the bodies of four different alien species recovered from crashed craft, intensifying calls for UFO transparency.