Take a hike, kid.

G’wan. Get out of here. No, you don’t need me to hold your hand. The Guardian says you should go outside and play!

[A] growing body of evidence is starting to show that it’s not so much what children know about nature that’s important, as what happens to them when they are in nature (and not just in it, but in it by themselves, without grownups). Respectable scientists – doctors, mental health experts, educationalists, sociologists – are beginning to suggest that when kids stop going out into the natural world to play, it can affect not just their development as individuals, but society as a whole.

“There’s a paradox,” says Stephen Moss, naturalist, broadcaster and author. “More kids today are interested in the natural world than ever before; they watch it on the telly, they may well visit a nature reserve or a National Trust site with their families. But far fewer are experiencing it directly, on their own or with their friends, and that’s what counts: this is about more than nature.”

Free and unstructured play in the outdoors boosts problem-solving skills, focus and self-discipline. Socially, it improves cooperation, flexibility, and self-awareness. Emotional benefits include reduced aggression and increased happiness. “Children will be smarter, better able to get along with others, healthier and happier when they have regular opportunities for free and unstructured play in the out-of-doors,” concluded one authoritative study published by the American Medical Association in 2005.

“Nature is a tool,” says Moss, “to get children to experience not just the wider world, but themselves.” So climbing a tree, he says, is about “learning how to take responsibility for yourself, and how – crucially – to measure risk for yourself. Falling out of a tree is a very good lesson in risk and reward.”