Woodland gives children in cities better mental health and thinking skills. Researchers said a natural environment is important for a child's development. The researchers said seeing and hearing the sounds of nature helps the mental health of children in and improves their learning.

Researchers studied children at 31 schools in London over four years. They looked at how woodland affected children's health. Children near woodland got higher scores on tests. They also had a lower risk of behavioural problems. A researcher said children should enjoy "the sights, sounds and smells of a forest" every day.