This Is How You Stop an Old Train Tunnel From Flooding

The Albula Tunnel, the second longest on the Glacier Express line that cuts through the Swiss Alps, was opened in 1903. As a result, it's badly in need of renovation - and engineers have an ambitious solution. (3:28)

Tags

Latest Videos

Preview thumbnail for video'Inventing the Jet Engine Came With a Few Disasters
Inventing the Jet Engine Came With a Few Disasters (2:55)
Preview thumbnail for video'Footage of the First Martin-Baker Ejection Seat Test
Footage of the First Martin-Baker Ejection Seat Test (2:55)
Preview thumbnail for video'Malala Yousafzai's Message To Marley
Malala Yousafzai's Message To Marley (0:32)
Preview thumbnail for video'Experts Assess Why This Plane Fell Off a Cliff
Experts Assess Why This Plane Fell Off a Cliff (2:24)
Preview thumbnail for video'The Deadly Secret Kept From the Titanic's Passengers
The Deadly Secret Kept From the Titanic's Passengers (3:06)
Preview thumbnail for video'A Routine Landing Turns Into Every Pilot's Nightmare
A Routine Landing Turns Into Every Pilot's Nightmare (2:34)
Preview thumbnail for video'One of the Worst Man-Made Disasters in History
One of the Worst Man-Made Disasters in History (4:03)
Preview thumbnail for video'This Ex-Trapeze Artist Made Parachutes Safer
This Ex-Trapeze Artist Made Parachutes Safer (3:02)
Preview thumbnail for video'This Pressure Suit Helped Pilots Survive New Heights
This Pressure Suit Helped Pilots Survive New Heights (3:59)