The children of today are subject to a real house arrest due to their parent’s fears, to the «English-violin-ballet» tight schedule that must be followed so that they can have «opportunities», and also to the inconveniences that arise when children get dirty. But, is it possible to be a child without climbing trees, drilling wells to reach the other end of the planet, and making secret cabins with tree branches?

Everyone agrees that playing is vital for children. However, only a small amount of the time spent on playing takes place outdoors, in the open, without anything other than nature to interact with. And it is precisely this type of playing that is more beneficial for the physical, emotional and social development of our kids; outdoor play is, in fact, the play par excellence.

In this book the author, a biologist, educator and founder of the first outdoor children's school, explains why playing outdoors is essential for our children’s growth and how we can encourage it.