Europe's biggest infrastructure project is halfway done.
At 76 miles long, it would surpass the combined length of world’s two longest underwater tunnels and cut through two fault lines.
Today marks the end of roughly 75 years of on-again-off-again road closures in a suburb of San Francisco.
Modern London was built on top of a large number of plague pits, and the city's thirst for more space means digging won't slow down any time soon.
Jerry Brown is taking a blunt approach to a controversial water plan.
"The Majesty" is an installation in an abandoned London railway vault that's crawling with slow-moving, spore-spitting mold.
Earthquakes, underground chemicals, hysteria and emotion all collide in L.A.
Plans are once again underway to bring Dupont Circle's tunnels back to life—but will the neighborhood get behind it?