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• Sensors to monitor bridges – and even enable them to tweet

  While bridge collapses are rare, there have been enough of them to raise concerns in some parts of the world that their condition is not sufficiently monitored. Sweden is taking a hi-tech approach to its aging infrastructure. Researchers from KTH Royal Institute of Technology in Stockholm are rigging up the country’s bridges with multiple sensors that allow early detection of wear and tear. The bridges can even tweet throughout the course of a day.