Bacillus subtilis (Image: Lawrence Livermore National Laboratory)
The Boston Subway (Photo: DanTD)
Over the next six months, the United States Department of Homeland Security’s Science and Technology Directorate is releasing a harmless bacterium into the underground train system as part of its “Detect to Protect” program. It’s purpose isn’t to frighten commuters, but to test sensors designed to detect biological weapon attacks.
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