On the matter of the US government covering up the loss of a nuclear weapon in northern Greenland when a B-52 bomber crashed there in 1968, William H Chambers, formerly of Los Alamos Nuclear Laboratory had this to say:

‘The bottom of the ocean is not a bad place in terms of environmental effects.’

Read that again. Savour it. Tell it to the clean-up workers dying of radiation-related illnesses.

(Despite the US only just admitting to losing the weapon this week, Greenpeace were on the case decades ago.)