Hundreds of thousands of vehicles have been court ordered to use convert to CNG in the Indian State of Gujarat. Photo by vipez.

How can we encourage standards for less polluting fuels? Photo by Meena Kadri.

A study by Columbia University found that even the least expensive white roof coating can reduce peak rooftop temperatures in summer by an average of 43°F. Photo by 350.org.

Ecobici bike share of Mexico City announced plans to increase operations next year by 180 new stations and roughly 3,000 new bicycles. Photo by Angelica.

After 12 months of operation, London’s bikesharing outfit Barclays Cycle Hire boasts roughly 6 million logged bike trips.Photo by Donald Macleod.

Lee Schipper, a former oil industry executive who leads a transportation and environmental study program at the World Resources Institute, said that what pushed European drivers to diesel was a tax policy that made the fuel cheaper, but buyers there tend to drive more, so they don’t save on total consumption.

Lee Schipper, a former oil industry executive who leads a transportation and environmental study program at the World Resources Institute, said that what pushed European drivers to diesel was a tax policy that made the fuel cheaper, but buyers there tend to drive more, so they don’t save on total consumption.

EMBARQ, the World Resources Institute's Center for Transport and the Environment, the U.S. Environmental Protection Agency, the Mexico City government, the Mexican Ministry for Environment and Natural Resources (SEMARNAT), and the Center for Sustainable T

La contaminación del aire en la ciudad de México representa cada vez menos una amenaza para la salud de sus habitantes, gracias a las inversiones realizadas en la materia, por mil 200 millones de pesos.