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Elon Musk unveils $20B undersea hyperloop to slash New York–London travel to 54 minutes
The Seikan Tunnel in Japan is the world's current longest undersea tunnel used by bullet trains. Spanning 53.85 kilometers (33.46 miles), it includes a 23.3-kilometer (14.5-mile) section beneath the ...
The Fire and Disaster Management Agency issued an emergency alert at the time of the quake, predicting strong shaking in the ...
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