Experts say tests could have predicted Flint's problems. Flint didn't add chemicals to water that Detroit had used successfully. Chemical tests could have predicted the corrosion in the pipes that is ...

A heart computed tomography (CT) scan uses X-rays to create detailed images of your heart. The test can help doctors evaluate the structure and function of the heart and the surrounding blood vessels.

I have been a technology journalist for 30-plus years and have covered just about every kind of computer gear—from the 386SX to 64-core processors—in my long tenure as an editor, a writer, and an ...