SAY you’re driving through the country in the middle of a weekday and spot a group of children mucking around on the banks of a stream. Chances are, your first thought is: Why aren’t those kids in school? Zenobia Barlow’s answer is: Maybe they are.

Barlow is at the heart of an educational revolution aimed at reconnecting students to the natural world. “If we are to survive as a species,” she says, “we need to shape minds capable of grasping ecological understanding.” What this means in practice, she tells us, is getting our hands dirty, working in fields and gardens.