npj Urban SustainabilityInfluence of objective and perceived exposures to urban nature on people’s happinessMaosu LiSong GuoFábio DuarteAshutosh KumarNorimasa KoboriFan XueWeimin ZhuangAnthony G. O. YehCarlo Ratti2026-01-09Full textDOI https://doi.org/10.1038/s42949-025-00306-9