Fast Fact Library

A study of tree cover in and around the California residences of 7,910 participants suggests that increased tree cover in a neighborhood is related to better overall health, particularly lower rates of obesity and...

Ulmer, Jared M, Kathleen L. Wolf, Desiree R. Backman, Raymond L. Tretheway, Cynthia JA Blain, Jarlath PM O’Neil-Dunne, and Lawrence D. Frank. (November 2016). Multiple health benefits of urban tree canopy: The mounting evidence for a green prescription. Health & Place 42: 54-62. https://doi.org/10.1016/j.healthplace.2016.08.011

A global meta-analysis of 221 landscapes found that forest restoration enhanced biodiversity by 15-84% and vegetation structure by 36-77% as compared to degraded ecosystems. While restoration did not fully recover...

Crouzeilles, Renato, Michael Curran, Mariana S. Ferreira, David B. Lindenmayer, Carlos E. V. Grelle, and José M. Rey Benayas. A global meta-analysis on the ecological drivers of forest restoration success. Nature Communications 7, 11666 (2016). https://doi.org/10.1038/ncomms11666

Researchers found that exposure to live plants, nature views, and the color green can increase students’ visual creativity in a classroom setting. Students’ visual creativity as determined by impartial judges was...

Syvie Studente, Nina Seppala, and Noemi Sadowska. “Facilitating Creative Thinking in the Classroom:  Investigating the Effects of Plants and the Colour Green on Visual and Verbal Creativity.” Thinking Skills and Creativity, 19 (2016) 1-8.

In a Berlin study, home window views that afforded a higher percentage of vegetation as well as a higher diversity of plant material were connected to lower stress levels in residents, as indicated by lower hair...

Honold, Jasmin, Tobia Lakes, Reinhard Beyer, and Elke van der Meer. “Restoration in urban spaces: Nature views from home, greenways, and public parks.” Environment and Behavior, 48.6 (2016): 796-825.

Tree species differ in their ability to reduce air and surface temperatures and increase relative humidity. Trees with a high leaf-area density and rate of transpiration are more effective at cooling air...

Gillner, Sten, Juliane Vogt, Andreas Tharang, Sebastian Dettmann, and Andreas Roloff. (2015). Role of street trees in mitigating effects of heat and drought at highly sealed urban sites. Landscape and Urban Planning, 143, 33-42.

In this study of New York City streetscapes, trees made people feel safer than building-related variables, and tall, narrow streetscapes made people feel safer than short, wide streetscapes. More buildings per...

Harvey, Chester, Lisa Aultman-Hall, Stephanie E. Hurley, and Austin Troy. (2015). Effects of skeletal streetscape design on perceived safety. Landscape and Urban Planning, 142, 18-28.

A study in Toronto, Canada found that having 10 more street trees on a city block, on average, improves health perception in ways comparable to an increase in annual personal income of $10,000 and moving to a...

Kardan, Omid, Peter Gozdyra, Bratislav Misic, Faisal Moola, Lyle J. Palmer, Tomáš Paus, and Marc G. Berman. (2015). Neighborhood greenspace and health in a large urban center. Scientific Reports, 5.

In a review of 30 published health impact assessments on the costs and benefits associated with walking and cycling for transportation, substantial health benefits were found with a shift to active transportation...

Mueller, Natalie, David Rojas-Rueda, Tom Cole-Hunter, Audrey de Nazelle, Evi Dons, Regine Gerike, Thomas Götschi, Luc Int Panis, Sonja Kahlmeier, and Mark Nieuwenhuijsen. (2015). Health impact assessment of active transportation: a systematic review. Preventive medicine, 76, 103-114.

Stream daylighting can increase watershed-scale nitrogen retention. Nitrate travels on average 18 times farther downstream in buried streams than in open ones before being removed from the water column. Burial...

Beaulieu, Jake J., Heather E. Golden, Christopher D. Knightes, Paul M. Mayer, Sujay S. Kaushal, Michael J. Pennino, Clay P. Arango et al. (2015). Urban Stream Burial Increases Watershed-Scale Nitrate Export. PLOS ONE, 10(7), e0132256.