Residential green space in childhood is associated with lower risk of psychiatric disorders from adolescence into adulthood:
https://www.pnas.org/content/early/2019/02/26/1807504116.abstract  #Health

Instead of all this mindless talk of introducing computers into young children's lives (lots of scientific studies show its a horrible idea) - here is evidence that exposing them to nature has great effects. From an evolutionary perspective, this seems rather obvious.