Scientists lit a cave of natural gas on fire in 1971 expecting it to only burn for a few days; it still burns to this day. It has been nicknamed "The Door to Hell".
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In major cities like Brooklyn and London, there are fake townhouses that hide subterranean chimney vents, emergency subway exits, and more. Camouflaged in plain sight, they normally go unnoticed within their architectural surroundings.
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In 2007, a customer kindly gave a $10,000 tip to a Pizza Hut waitress after hearing she had financial troubles which had forced her to drop out of college.
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