Research by Thygesen and colleagues indicates that spending a little extra to provide greater access to green spaces for children may be money well spent. The Thygesen-lead team reports that when they reviewed data collected in Denmark for “individuals, who were born in Denmark between 1992 and 2007 . . . and followed for a diagnosis of ADHD [Attention-Deficit Hyperactivity Disorder] from age 5, during the period 1997–2016. . . . Individuals living in areas defined by sparse green vegetation…