How do they build things like tunnels and bridges underwater? – Helen, age 10, Somerville, Massachusetts When I was a kid, I ...

A record-breaking tunnel is being built under the Baltic Sea between Denmark and Germany, which will slash travel times and ...

Spain has begun investigating the possibility of connecting Europe to Africa via an underwater tunnel to Morocco. On Saturday ...

In the south of Denmark a mega project is underway to build a tunnel under the Baltic and providing a link to Germany. It's currently Europe's biggest construction site and the world’s longest ...

The building is made from hexagonal and triangular modules which connect together above and below the water using a series of walkways and tunnels ... will prevent the underwater sections from ...

China is currently planning to build the world's longest underwater motorway tunnel beneath its longest river. China has just launched a huge self-developed tunnel boring machine (TBM) to build ...

Most underwater tunnels - including the 50km ... Denmark and Germany signed an agreement to build the tunnel back in 2008, but the scheme was delayed by opposition from ferry operators and German ...