A narrative and systematic review of the behavioural, cognitive and emotional effects of passive nature exposure on young people: Evidence for prescribing change

•Nature is prescribed by health experts but as an intervention it is under researched.•There are limited longitudinal or pre-post studies of nature and youth.•Passive nature exposure may promote positive changes in attention in youth.•Nature as part of school design may benefit young people’s cognitive development.•Real world outcomes are under researched and must become a focus.