Humans evolved to respond to darkness by producing melatonin, the hormone that regulates the sleep cycle. But our light-sensitive pineal gland near the center of the brain responds to blue light by suppressing melatonin, causing us to wake up, the Washington Post reports. When we see too much blue light in the late evening, it delays or disrupts the melatonin rush. In other words, my iPad can keep me up even after I turn it off. But just as technology can cause this problem, it offers a solution as well. Enter F.lux, a desktop application that adjusts a computer screen's...

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About the Author:

Denny Carter

Dennis has covered higher education technology since April 2008, having interviewed some of the most recognized IT pros in U.S. colleges and universities. He is always updating eCampus News with the latest in pressing ed-tech issues, such as the growing i