TY - JOUR T1 - New code serves as ethical guidance for public health: Revised code first in US since 2002 JF - The Nation's Health JO - Nations Health SP - 1 LP - 20 VL - 49 IS - 10 AU - Mark Barna Y1 - 2020/01/01 UR - http://www.thenationshealth.org/content/49/10/1.3.abstract N2 - Urban tree canopies improve quality of life and public health. They can beautify a neighborhood, raise residential property values and help reduce air pollution and sun exposure. ER -