San Francisco's Pedestrian Safety Task Force is developing the city's first-ever Pedestrian Action Plan to reduce serious and fatal pedestrian injuries. Photo by C. M. Keiner.

A new study finds green roofs can absorb 30 percent of the rainfall that land on them, curbing storm water runoff. Photo by Eveliz Vega Marzan.

As biofuel production ramps up, counting all the associated greenhouse gas impacts is critical to good energy and climate policy.

Below is an interview with WRI economist and biofuels expert Liz Marshall.

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.