My chemistry teacher called today Mole Day, and while this story doesn't have much chemistry in it, it does have a mole: a Londoner called William Lyttle who dug huge tunnels around his place.
In September 1924, a truck accidentally discovered a series of tunnels underneath Washington DC. There were lots of rumors, but it turned out a local guy had just dug them himself, for "exercise." Here's his story.
The commemoration ceremony for the Channel Tunnel was a diplomatic coup but an engineer's nightmare: they had to run a train carrying Queen Elizabeth II and a train with French President Francois Mitterand toward each other... on the same track.
