In the 1950s, the CIA initiated Project MKULTRA.
Its purpose was to use scientific techniques to affect and control people's minds. According to an official CIA document, this included research into 'substances which will promote illogical thinking and impulsiveness to the point where the recipient would be discredited in public'.
It is not known if the British government carried out similar research, though some people think it likely.
In 2004, excavations for a secret missile silo were uncovered within the grounds of RAF Spadeadam. No official documents relating to the construction of these silos appear to exist.
RAF Spadeadam contains a number of sites of Special Scientific Interest, and the RAF is scrupulous about conserving the wildlife and habitats that exist within the base.
The hen harrier is one of the rarest birds in the United Kingdom. Evidence suggests that breeding hen harriers are being routinely killed and if nothing is done to reverse this trend, this beautiful bird risks becoming extinct, at least in England.