Engineering

For green building, 'durable is the new 'sustainable'

Reducing the negative environmental impact of buildings—globally one of the largest contributors to greenhouse gas emissions—might be even more difficult than expected. New research from Drexel University indicates that, ...

Engineering

When 242 pipes stand between a county and its emergency room

People rarely think about culverts until they are gone. These plain pipes and boxes carry roads over streams and span less than 20 feet—the federal cutoff for what counts as a bridge. That means road-stream crossings stay ...

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