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Wildlife crossings not only protect wildlife, they also promote human safety. A study of a Colorado State Highway showed an 86% reduction in the number of animal carcasses found along the highway and a 70% decrease...

Julia Kintsch et al., “State Highway 9 Wildlife Crossings Monitoring – Year 2 Progress Report,” Colorado Department of Transportation (March 2018): i-ii.

A visual preference survey of 836 Boston pedestrians and cyclists indicates a preference for trees and shrubs as dividers between bike lanes and traffic and the presence of trees alongside bike lanes over no trees...

Lusk, Anne C., Demostenes Ferreira da Silva Filho, and Lea Dobbert. (2018). Pedestrian and cyclist preferences for tree locations by sidewalks and cycle tracks and associated benefits: Worldwide implications from a study in Boston, MA. Cities. https://doi.org/10.1016/j.cities.2018.06.024

A study of 167 European cities suggests that up to 10,000 premature deaths could be avoided annually if cities provided sufficient infrastructure and 1 in every 4 citizens used bicycling as their primary mode of...

Natalie Mueller et al., on behalf of the PASTA consortium. Health impact assessment of cycling network expansions in European cities. Preventive Medicine 10.1016 (2018).

The greening of vacant lots can reduce self-reported feelings of depression in adults. In a Philadelphia study of 324 participants living in an area where 110 vacant lots received clean-up and greening...

South EC, BC Hohl, MC Kondo, JM MacDonald, and CC Branas. (2018). Effect of Greening Vacant Land on Mental Health of Community-Dwelling Adults: A Cluster Randomized Trial. JAMA Netw Open 1(3):e180298. https://doi.org/10.1001/jamanetworkopen.2018.0298

A study of 174 parks in 25 U.S. cities found that parks with walking loops had 90% higher levels of moderate-to-vigorous physical activity in park users as compared to parks without walking loops. Parks with...

Cohen, Deborah A., Bing Han, Kelly R. Evenson, Catherine Nagel, Thomas L. Mckenzie, Terry Marsh, Stephanie Williamson, and Peter Harnik. “The Prevalence and Use of Walking Loops in Neighborhood Parks: A National Study.” Environmental Health Perspectives 125, no. 2 (2017): 170–74. https://doi.org/10.1289/ehp293.

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