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Learn More
In Learn More the National Geographic magazine team shares some its best sources and other information to expand your knowledge of our featured subjects. Special thanks to the Research Division.

Related Links

Government of Paris
An abbreviated English version of this site is available, with descriptions of some of Paris's most popular spots.

Promenade Plant
View photographs taken on the Promenade Plant, varying in themes from nature, sports, urbanism, and more.

Project for Public Spaces‚ Paris
An overview of the City of Light's public spaces, this shows some of the best and worst uses of Paris's parks, plazas, and other public sites.


"The Value of Trees." USDA Forest Service Urban and Community Forestry Appreciation Tool Kit.

Kuo, Frances E., and William C. Sullivan. "Environment and Crime in the Inner City: Does Vegetation Reduce Crime?" Environment and Behavior (May 2001), 343-67.

Kuo, Frances E., and Andrea Faber Taylor. "A Potential Natural Treatment for Attention-Deficit/Hyperactivity Disorder: Evidence from a National Study." American Journal of Public Health (September 2004), 1580-86.

McPherson, E. G., D. J. Nowak, and R. A. Rowntree. Chicago's Urban Forest Ecosystem: Results of the Chicago Urban Forest Climate Project. U.S. Department of Agriculture, 1994.

Pyper, Wendy. "Do Greener Cities Mean Healthier People?"Ecos (April/June 2004), 9-11.

Scott, Klaus I., James R. Simpson, and E. Gregory McPherson. "Effects of Tree Cover on Parking Lot Microclimate and Vehicle Emissions." Journal of Arboriculture (May 1999), 129-42.

Sullivan, William C., Frances E. Kuo, and Stephen E. Depooter. "The Fruit of Urban Nature." Environment and Behavior (2004), 678-700.

NGS Resources

Mitchell, John G. "Frederick Law Olmsted's Passion for Parks." National Geographic (March 2005), 32-51.

Stone, George. "The Traveler List: 22 Secret Gardens." National Geographic Traveler (March 2005), 73-76.

Tarpy, Cliff. "The Battle for America's Front Yard."National Geographic (June 2004), 60-71.

"Vancouver Highlights: Stanley Park." National Geographic.

Grescoe, Taras."Insider's Paris." National Geographic Traveler (March 2003), 70-85, 118-23.