Stretching 18km between Denmark and Germany, this €7bn immersed tunnel is the world’s longest road and rail link. By 2029, it ...

The Great Allegheny Passage’s landmark Big Savage Tunnel southeast of Meyersdale will close for the winter months Nov. 27. The closure is an annual move to preserve the internal lining of the historic ...

The Israel Defense Forces (IDF) on Sunday said it has uncovered "the biggest Hamas tunnel" in Gaza, spanning a length of four kilometers (2.5 miles). The IDF said the tunnel, secured "a few weeks ago" ...

Gov. Jerry Brown won crucial early approval from federal wildlife officials Monday for his $16 billion proposal to re-engineer California's north-south water system, advancing his plan to build two ...