More and more children today have less and less contact with the natural world. And this is having a huge impact on their health and development

The survey, of 2,000 eight-to-12-year-olds for the TV channel Eden, is the latest in a string of similar studies over the last couple of years: more children can identify a Dalek than an owl; a big majority play indoors more often than out. The distance our kids stray from home on their own has shrunk by 90% since the 70s; 43% of adults think a child shouldn’t play outdoors unsupervised until the age of 14. More children are now admitted to British hospitals for injuries incurred falling out of bed than falling out of trees.