Paragraph 2
The four-year
involved 3,568 children at 31
in London. Researchers calculated how woodland, parks, and "blue
" like rivers, lakes and the sea, affected children's
. Children who visited woodland every day scored
on memory-based
. They also had a 17 per cent
risk of behavioural problems. A
said all children should experience "forest
" and enjoy "the sights, sounds and smells of a
".