British researchers noticed that the mine was spacious enough to hold fully grown chickens. This was more than just an entertaining observation (like, “Hey, I bet your head could fit inside that box”)—it could be a solution to the problem. Their body heat could keep the components warm enough to ensure that they would work if called upon. Throw a chicken or two into the mine, toss in some chicken feed, and seal it up. The chicken feed actually served two purposes. The first is the obvious: It let you keep the “live” in your “live chickens.” But secondly, it keeps your chickens from getting
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