A hypersonic underwater tunnel connecting the UK to the United States could see trains travelling at speeds of 3,000mph. But the dream of a trans-Atlantic train connecting London and New York ...
This futuristic dream forms the foundation of a proposed transatlantic tunnel-a colossal engineering project that would connect the United States and ... proposing an underwater passage stretching ...
Work is underway to close off a man-made tunnel linking El Paso to Juárez at the U.S.-Mexico border, authorities said. "The government of the United States initiated the covering of the man-made ...