Video Details

Building Big: Tunnels

Core Subject(s): Science
Length: 00:00:00
Website: http://www.uen.org/emedia
Usage rights: Download and retain personal copies in perpetuity.

Availability information for this program

What keeps a tunnel from collapsing? Tunnels have advanced from dangerous, claustrophobic passages to spacious, safe subterranean networks as roomy as shopping malls. Host David Macaulay takes viewers underground to explore the history and ingenuity behind some of the world's tunneling marvels.

Availability:

EMEDIA

eMedia programs can be viewed online or downloaded by logging in to the eMedia website.