According to a pair of studies by the University ofCalifornia's Lawrence Berkeley National Laboratory, doubling the number of mature trees and resurfacing dark-colored roofs and roads with heat-reflecting material in Sacramento County would almost halve
Funded by the U.S. Environmental Protection Agency, the study used aerial photographs taken with infrared cameras to make temperature maps; the images showed that rooftops and blacktops were the hottest areas in a city, while parks were the coolest. Preliminary releases indicate that on a hot day, the population center of the county is 1 to 2 degrees hotter than less-developed areas. As increased temperatures speed the formation of smog, lowered temperatures would decrease the amount of smog produced. The study calculated that doubling the number of trees along with cooling roof and pavement surfaces would result in a temperature drop of 2 to 3 degrees, and cause a 6 to 8 percent drop in ozone levels.
Thanks to California 2000 Project
European Cities Act on Density
The sprawling mass of suburbia has been a disaster for the environment. But now smaller, denser cities herald a renaissance in city living.
Nashville Sets Downtown Parking Maximums
Nashville is the latest city to enact a substantive change to the parking requirements set by the city’s zoning code—doing away with parking minimums and setting parking maximums in the city’s Urban Zoning Overlay.
Houston Development Aims to Create Hyper-Walkable, Micro-Living Neighborhood
The 17-acre Second Ward project has spurred both optimism for a more walkable city and concerns about displacement and gentrification.
Lyft Pulls Micromobility From Los Angeles Area
The company will no longer provide shared bikes and scooters in the L.A. region, citing a ‘lack of longterm commitment’ from cities.
King County Water Treatment Station Set to Open
The facility is part of a plan to protect the Duwamish River from polluted runoff from overflowing sewer pipes.
Proposed Park Yet Another Hurdle for Houston Interstate Expansion
The Interstate 45 widening project, halted by a federal order and opposed by many local officials and organizations, could hit a new snag if White Oak Bayou becomes a city park.
Chaddick Institute at DePaul University
HUD's Office of Policy Development and Research
Missoula Redevelopment Agency
City of Joliet
City of Crystal River
This six-course series explores essential urban design concepts using open source software and equips planners with the tools they need to participate fully in the urban design process.