One idea that refuses to go away is a proposed tunnel between Britain and the United States ... 23.5 miles under the sea between England and France and took six years to build.

In 1994, the 31-mile Chunnel Tunnel under the English Channel opened to passenger traffic between England and France. In 2009, NASA scientists reported finding at least 26 gallons of water on the ...

This article was originally published with the title “ Great Britain and France Decide to Build the Channel Tunnel ” in Scientific American Magazine Vol. 120 No. 16 (April 1919), p. 398 doi:10 ...

Not since the 1970s has there been such an important discovery from the Great War in France. In woods on a ridge ... the entrance to the Winterberg tunnel on the Chemin des Dames battlefront ...