If bicycling is as popular in the European Union as it is in Denmark, this would result in upto a 26 percent decrease in GHG emissions for the transportation sector. Photo by Will Vanlue.

Having exceeded air safety limits 56 times in 2011, Rome is limiting vehicle use in hopes of pushing pollution levels down. Photo by zenra.

ITDP released Europe's Vibrant New Low Car(bon) Communities, a report examining smart urban and transport planning in eight European communities, including Greenwich Millennium Village. Photo by Martin.

A survey by Workopolis found that a single day of telecommuting by Canada's workers could save $120 million and 60 kilograms of carbon emissions. Photo by Doug.

Attempting to evade the city's congested car traffic, more than 50,000 residents in Jakarta, Indonesia bike to work. Photo by nSeika.