March 31, 2016, 12pm PDT
As of Saturday, Hokkaido, Japan's northernmost island, was connected to Tokyo by the newest addition to Japan's iconic Shinkansen bullet trains. The 513-mile route includes 33.4 miles in "the world's deepest operational main-line rail tunnel."
October 30, 2013, 5am PDT
On the 90th anniversary of the founding of modern Turkey, officials realized a vision dreamt by an Ottoman sultan by inaugurating a rail tunnel beneath the Bosporus to connect Asia and Europe. Critics have questioned the tunnel's safety.
October 11, 2010, 8am PDT
Under pressure from DOT Secretary Ray LaHood, N.J. Gov. Chris Christie has authorized the Hudson River rail tunnel project known as ARC: Access to the Region's Core, to resume work. Key to the decision would have been the loss of $3 billion to N.J.