The call to renew a connection with nature comes from a collaboration of almost 400 organizations, from playgroups to the NHS.
The Wild Network wants children to take up activities like conkers and camping.
“The tragic truth is that kids have lost touch with nature and the outdoors in just one generation,” said chairman Andy Simpson.
The organizers argue that swapping 30 minutes of television and computer games each day for outdoor play would increase the levels of fitness and alertness and improve children’s well-being