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Putin envoy proposes $8 billion underwater tunnel linking Russia and Alaska

An economic envoy of Russian President Vladimir Putin has pitched the idea of building an underwater tunnel to link Russia ...

In THIS city, trains run at the speed of a cheetah, not above water, but below it, you have to descend 11 floors to travel in this train

If you want to see a train running underwater, you just need to head to Kolkata. Here, the metro train runs beneath the ...

Strategic boost: First-of-its-kind underwater road tunnel beneath Brahmaputra in Assam may get Cabinet nod soon; top facts

Assam's ambitious ₹6,000 crore underwater tunnel project, India's first under a major river, cnnecting Numaligarh and Gohpur, ...