A scientist visits a hospital’s nursery to spray pinene, the chemical that gives pine its scent. The babies, who haven’t yet been outside, immediately calm, their blood pressure lowering. Patients who see a tree outside their room get better faster than those who don’t. Nature heals. To take advantage of this, Philadelphia pediatricians are working with the Schuylkill Center for Environmental Education staff to prescribe nature time. So, what is the mounting evidence? And what are nature centers doing in response? Mike Weilbacher, director of the Schuylkill Center, presents the surprising evidence, plus an overview of pioneering programs his and other centers are developing. Naturalist Mike Weilbacher is the executive director of the Schuylkill Center for Environmental Education in Philadelphia’s Roxborough section. An award-winning environmental educator for 40 years, Weilbacher writes a weekly column for the Roxborough Review and is well known to public radio listeners as “Mike the All-Natural Science Guy” on the award-winning live children’s radio show, “Kid’s Corner” on WXPN.