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In their four-year
, researchers studied 3,568 children at 31 schools in London. They looked at
the natural environment affected
skills and mental health. They calculated how woodland, parks, and "blue
" like rivers, lakes and the sea, affected children's
. The children took memory-based
. Those who visited woodland every day scored
on the tests and had a 17 per cent lower
of behavioural problems. A researcher said all children should experience "forest
". This is enjoying "the sights, sounds and smells of a
".
