Let China build the longest undersea rail tunnel between Finland and Estonia – more geopolitical advantages than risks
5
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Finland to Estonia undersea rail tunnel project has taken a step forward
12 votes -
Norway is building the world's first submerged floating tunnel to cross the fjords
7 votes -
Can bacteria help us prevent salt damage to concrete roads and bridges?
4 votes -
China to open mega-bridge and tunnel: Thirty-four miles across the water
8 votes