The problem with white roofs is that while they keep apartments and the atmosphere cool, come winter people want that heat to absorb. A new high-tech roofing material switches from white to black when needed.
"The upshot is that when the sun is shining a roof tile covered in the material is white-colored, scattering up to 80% of the sunlight back and thus keeping the building beneath the roof cooler. The result is a 20% reduction in cost to keep the interior at a comfortable temperature in the summer, a figure which also comes with an eco-friendly drop in the electricity supply demands. During winter, of course, you'd prefer your roof to capture as much heat as possible from the sun, which is where the black coloring is handy--the tiles scatter just 30% of incoming solar radiation then."
FULL STORY: Your Future Home's Roof Will Be Eco-Friendly Too
Looking Back to Find the Future of San Diego
An advocacy group is republishing the 1974 regional plan for sustainability, and finding that it's just as relevant now as it was then.
It's Now Safe to Link Hurricane Precipitation and Climate Change
A new study from MIT makes a clear connection between the intensity of rainfall caused by Hurricane Harvey last August in Texas and climate change, concluding that the likelihood of stronger downpours is greatly increasing.
Boston's Data-Driven Bus System Makeover
MIT's Transit Lab created a ridership model called Origin Destination Transfer (ODX) that the Massachusetts Bay Transportation Authority is using to make incremental changes to the region's bus system.
Seattle Legalizes Co-Living
A new state law requires all Washington cities to allow co-living facilities in areas zoned for multifamily housing.
Central Florida’s SunRail Plans Major Expansion
The expanded train line will connect more destinations to the international airport and other important destinations.
NYC Officials Announce Broadway Pedestrianization Project
Two blocks of the marquee street will become mostly car-free public spaces.
Harnessing Waste Heat Through Thermoelectricity
Heat from industrial installations and buildings can be captured to create renewable electricity.
Major US Cities Still Suffering Downtown Decline
Research shows that the “donut effect” hollowing out central business districts since the pandemic continues to cause economic decline in the 12 largest American cities.
Terre Haute Transit Goes Fare-Free
Buses in the Indiana city will be free as of January 2.
Urban Design for Planners 1: Software Tools
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.
Planning for Universal Design
Learn the tools for implementing Universal Design in planning regulations.
Los Alamos County
City of Culver City
Skagit Transit
American Planning Association, Sustainable Communities Division
HUDs Office of Policy Development and Research
HUDs Office of Policy Development and Research
City of Cambridge, Maryland
Newport County Development Council: Connect Greater Newport
Rockdale County Board of Commissioners