Tunneling Under History
This item is included in the following series/curriculum: Daily Planet Segments (2011-2012 Season)
- Grade Level: General
- Subjects: Science and Nature, Design and Technology
- Produced By: Exploration Production Inc.
- Year: 2011
- Country: Canada
- Language: English
- Running Time: 4m 9s
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Engineers and workers in Barcelona, Spain, have to be extremely careful as they build an underground high-speed train line under some of the world's most famous buildings