Nature-deficit disorder.

"Nature-deficit disorder is the idea that human beings, especially children, are spending less time outdoors than they were in the past, and the belief that this change results in a whole range of behavioral disorders." Wikipedia.

"Why should we tolerate a diet of weak poisons, a home in insipid surroundings, a circle of acquaintances who are not quite our enemies, the noise of motors with just enough relief to prevent insanity?" Rachel Carson, Silent Spring. 

House of Commons Ottawa November 24, 2016 MP Wayne Stetski (Kootenay-Columbia, British Columbia) New Democratic Party: "Mr. Speaker, when we live in an urban area and have small pockets of important ecological areas, those ecological areas are important not only on their own but for their educational value to the people who live around them."

"We can use these areas to teach people about the importance of conservation and national parks...We absolutely need more national urban parks across Canada. They are good for the soul. They are good for helping with nature deficit disorder."

Causes of nature-deficit disorder:

• Urbanization without nature.
• A culture of fear.
• Silicon faith.
• Cultural devaluing of nature.  (From: Richard Louv, September 13, 2014, author of Last Child in the Woods: Saving Our Children from nature-deficit disorder.")