Local energy sources coupled with widespread, inexpensive gadgetry will soon enable cities to become smarter, more sustainable and more self-reliant
The cities of the future might be greener, cleaner and more vibrant if people are put before automobiles. David Biello reports
Growing crops in city skyscrapers would use less water and fossil fuel than outdoor farming, eliminate agricultural runoff, and provide fresh food
New York City--and other major metropolises around the globe--face an epic challenge in coping with the impacts of global warming
Traffic avoided: Software uses road sensors, GPS and historical traffic data to predict congestion
Wind, water and solar technologies can provide 100 percent of the world's energy, eliminating all fossil fuels. Here's how
The next wave of high-speed rail lines should do away with the rails altogether, say proponents of magnetic levitation technology
Industry leaders look way down the road
Cultivating crops in downtown skyscrapers might save bushels of energy and provide city dwellers with distinctively fresh food
Updating the aging electricity grid may save money, energy and greenhouse gas emissions
People take cars for walkable trips in part because such trips are boring and unattractive. Better design of the urban environment could create more pedestrians. Karen Hopkin reports
Suburbia was a dream inspired by revulsion to city life. Now many suburbs are just as crowded, and sprawl moves on.
Satellite data reveals that demand from urban areas may be the primary driver of the loss of trees--a shift from the patterns of the past
Redesigning metropolitan areas as bioregional city-states can reduce our human footprint
Urban travel is slow and inefficient, in part because drivers act in self-interested ways
Home sweet home: Not all honeybees work far afield--some are making honey high in the rooftops
Visions of the future have long revolved around the automobile, from the ubiquitous flying car of sci-fi flicks such as The Fifth Element to the garbage-guzzling, Mr.
Constructing buildings to the LEED standard can conserve energy and materials-or be exploited for promotional gain
To boost urban bicycling, figure out what women want
The Web-only article below is a special rich-media presentation of the feature, "A Path to Sustainable Energy by 2030", which appears in the November 2009 issue of Scientific American ...
Automobiles are still part of the American way of life, but in many municipalities other modes of transportation are moving in on what had been car territory