Engineering

New standards developed to improve metal-detector testing

Metal detectors now appear routinely in the entrances of many schools, airports and even houses of worship. They serve as portals to correctional facilities, prisons and courthouses, and guards often wave the hand-held models ...

Energy & Green Tech

Minnesota moves to get more electric vehicles on roads

Minnesota will require car manufacturers to sell more electric vehicles in the state starting in the 2023 model year, Gov. Tim Walz said Wednesday, a move meant to reduce greenhouse gas emissions while defying the Trump administration's ...

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