Hi -
I found this article deeply helpful.
http://www.washingtonpost.com/national/health-science/why-one-dc-doctor-is-prescribing-walks-in-the-park-instead-of-pills/2015/05/28/03a54004-fb45-11e4-9ef4-1bb7ce3b3fb7_story.html?tid=sm_tw
Nature Deficiency
https://experiencelife.com/article/nature-deficit-disorder/
http://www.bbc.com/news/magazine-32974131
http://opinionator.blogs.nytimes.com/2012/03/29/nature-deficit-disorder/?_r=0
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http://www.dailyinfographic.com/how-nature-helps-kids-live-and-learn-better-infographic
Connecting with Nature Boosts Creativity and Health
http://news.nationalgeographic.com/news/2013/06/130628-richard-louv-nature-deficit-disorder-health-environment/
How Nature Deficit Disorder Impacts our Natural Life
http://voices.nationalgeographic.com/2012/12/14/the-nature-deficit-disorder-and-how-it-is-impacting-our-natural-world-an-interview-with-dr-michael-hutchins/
Juan Martinez Was Helped by Nature Engagement
http://www.nationalgeographic.com/explorers/bios/juan-martinez/
Children and Nature website
http://www.childrenandnature.org/
http://www.nationalgeographic.com/explorers/bios/juan-martinez/
If you're inclined to read more of the content of this blog, here's the link www.journeyawakenings.blogspot.com