The numbers you see on the box don't always work out in real life. LED bulbs do last longer, but those claims about five to 10 years are estimates based on internal testing -- and companies are always ...

The government rolled out a longer, harder exam this month for aspiring Americans. More than 350,000 Washington Post readers took our quiz. They gave it mixed marks.

Battery cell voltage is the most fundamental measurement made on the cell. While on the surface measuring voltage seems easy, ...

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Indiana Michigan Power warns Hoosiers on winter electrical safety as cold hits. Learn tips to avoid fires from heaters and ...