British Chicken-Warmed Nuke

darrellberry writes "During the Cold War, British researchers developed a nuclear landmine, kept operational during cold conditions by packing it full of live chickens. This story has appeared in a few UK media channels this morning. Probably an April Fools', but who knows? The bomb is supposedly on display at the National Archives in Kew, so if you live in London you can go and see for yourselves..." Also a BBC story and an older New Scientist blurb.