by Jenny Miller 

While it's not a formal medical diagnosis, nature-deficit disorder is no less alarming. The term was coined by author Richard Louv in his book, Last Child in the Woods, to describe the physical and psychological costs of the disconnect between humans and nature. This is concerning kids today who are spending less time in nature and more time indoors with their noses in electronic gadgets. This is not only depriving them of nature's innate benefits, but also giving rise to various learning, developmental, and health problems. Needless to say, understanding the disorder is as important as mitigating it. Here's what you need to know.