Science & Tech.
Science & Tech. quiz - quizzes about technical stuff and science
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Science & Tech. Cup
Our current Science & Tech. Champion is: JohnJ 
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Next start: 2025-01-25
Bridges
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A bridge is a structure built to span a gorge, valley, road, railroad track, river, body of water, or any other physical obstacle, for the purpose of providing passage over the obstacle.
BridgesPopular Science & Tech. subjects
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