New York Times

Bicycle commuting increased 43% in the U.S. from 2000 to 2008. And as commuters get used to having their trusty bike to get around, more business travelers are taking their ride with them.

Siemens has retrofitted trains for cold Russian winters; they are being rolled out now between Moscow and St. Petersburg and could be a model for American HSR.

Energy consultant Michael Lynch argues that there are upwards of 10 trillion barrels of oil out there, as opposed to the 2 trillion that peak oil proponents recognize.

As manufacturing continues to move overseas and offices fetch higher rents, NYC's Garment Center is struggling, threatening NYC's reputation as a fashion hub. City officials, manufacturers, labor unions, and designers weigh in on how to save it.

Tuk-tuks are mechanized rickshaws - a cheaper alternative to taxis - that can be found throughout the developing world, from Latin America to Africa to southeast Asia and India. Environmental think-tank Enviu is trying to reduce rickshaw emissions.

On Thursday, the Department of Buildings of New York City took off a billboard which has blanketed the lower floors of the 19th-century Cushman Building, 174 Broadway, at Maiden Lane for several years.

We don't need to build new energy efficient homes as much as we need to refurbish the existing housing stock to make it more energy efficient, writes Richard Moe of the National Trust for Historic Preservation.

The economic crisis is leading to a surge in homelessness and the growth of tent cities in many U.S. cities.

Starting with a tony 5-floor, 7,500 square foot townhouse on the Upper East Side, New York City mayor Michael Bloomberg has quietly bought 4 of the 6 neighboring townhouse apartments and combined them into what is now a 12,500 square foot mansion.

While demand has increased, the weakening economy is drying up operating revenues for municipal public transit services, and the billions of dollars promised in the federal stimulus package - intended for capital projects - won't help either.

The catastrophic spill of coal ash sludge in Tennessee is a wake-up call: there are more than 1,300 such dumps across the U.S., and, as a result of coal industry lobbying, no federal regulations for safe storage, reuse or disposal of the waste.

In a place as dynamic as New York City, balancing preservation with development pressure is no easy task.

A federal judge has put the kibosh on New York City Mayor Michael Bloomberg's plan to require taxi companies to use mostly hybrid vehicles by 2012.

Will Allen began Growing Power, an urban farming non-profit, in an ailing Milwaukee neighborhood in 1993. He has since spread the gospel of urban farming throughout the world, and earned a MacArthur Genius grant for his efforts.

Double-decker buses haven't been seen on New York streets since the 1970s. MTA is conducting a trial run for a month to see if they might be worth resurrecting.

Elected city officials in dozens of cities want to overturn term limits, saying current ones keep them from being able to tackle long-range projects.