Urban planners from Mexico City to Toulouse are adopting the high-flying mode of transit. Will it catch on elsewhere?

Inside the Secret Tunnel on US-Mexico Border Likely for Migrants & Drugs | Firstpost America | N18G US authorities recently ...

The hypothetical tunnel between the U.S. and the UK has been branded as a "high-risk" project by one of the world's leading megaprojects economists.

The tunnel, discovered on Jan. 10, connects the Mexican city of Ciudad Juarez with the Texas city of El Paso. On the Mexican side, it measures about 1,000 feet and is equipped with lighting ...

A remarkable discovery of underground tunnels beneath Cusco’s historic district is offering fresh insights into Inca ...