Why do people become environmental activists?
There is research [cite!] that suggests unstructured play in natural settings before age 11 is a key determinant. (school trips don’t count – that’s not unstructured!)
http://www.tandfonline.com/doi/abs/10.1080/00958964.1980.9941386?journalCode=vjee20
This recent one looks interesting too!
marchudson.net 