Aliens have invaded the news again. Last month, two US presidents weighed in on the topic in rapid succession, managing to make a public that was already obsessed with extraterrestrials even more so.

Before collecting any fragments of alien spaceships, you must complete a routine safety assessment – according to the UFO Field Investigator’s Manual. The book reads: ‘Check the area for strong smells ...

This article was featured in the One Story to Read Today newsletter. Sign up for it here. When President Trump promised, in a social-media post in February, “to begin the process of identifying and ...