None of the three main options could handle another Hurricane Harvey, but they would give varying benefits based on different sizes, costs and timelines.
Articles on Tunnels
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Underwater construction is a complex and difficult task, but engineers have developed several ways to build underwater … mostly by not building underwater at all.
Thanks to modern geological exploration technology we can piece together the events of July 1 1916 when a tactical error came with massive cost to the British army.
Urban warfare and the extensive tunnel network in Gaza benefit Hamas and pose a major challenge to the Israeli military.
Israel claims to have found a Hamas underground command and control system in the al-Shifa medical complex.
Though Hamas has the advantage of fighting on its territory, Israel has developed one of the most effective urban fighting militaries in the world.
Tunnel warfare tends to lessen any advantages a stronger, more advanced attacker might otherwise expect – and to favor the defenders hidden underground.
Hamas’s 300 mile network of tunnels under Gaza is going to prove difficult and perhaps deadly for Israeli troops attempting a ground war in the territory.
Ukrainian fighters are utilizing a maze of tunnels in Mariupol and other key cities. The use of the underground in conflict has a rich history.
What was once the stuff of urban legends now spreads virally through social media claims the tunnels beneath our cities are used for child trafficking. The truth is both more mundane and important.
Scientists have uncovered a hidden tunnel left in remarkable condition at a now derelict prison in Bridgend, South Wales.
As the latest controversy about tunnel exhaust stacks and respiratory health plays out in the media, some community members are proposing solutions that just don’t make sense.
Stonehenge has a traffic problem. But building a £1.4 billion tunnel is not the answer.
Londoners will be aware that there is a lot of work going on under their feet at the moment. There is the new Crossrail railway with eight subterranean stations, expansion of Tottenham Court Road, Bond…
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Reader in Forensic Geoscience, Keele University
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Professor of Islamic History, UMass Dartmouth
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Research Assistant, Faculty of Architecture, Building and Planning, University of Melbourne, The University of Melbourne
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Adjunct Lecturer in Terrorism and Assymetric Conflict and Senior Researcher in Urban Warfare (UNSW), Charles Sturt University
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Professor of Landscape Architecture and Urban Planning, Texas A&M University