'Night Shift' makes iPad mini an ideal bedtime ereader

The new "Night Shift" feature in Apple's iOS 9.3 update is the latest attempt by an electronics maker to reduce the amount of blue light tech device displays emit.What's wrong with blue light? It can mess with the body's melatonin levels, prevent people from nodding off at night, and create other sleep problems. A number of studies have been done on the subject of blue light and sleep, including an oft-cited report published by the Proceedings of the National Academy of Sciences i