Spending time outside raises levels of Vitamin D, helping protect children from future bone problems, heart disease, diabetes and other health issues.
Being out there improves distance vision and lowers the chance of nearsightedness.
Schools with environmental education programs score higher on standardized tests in math, reading, writing and listening.
Exposure to environment-based education significantly increases student performance on tests of their critical thinking skills.
Nature makes you nicer, enhancing social interactions, value for community and close relationships.
---Though written for kids, the outdoors is good for most.