A new study by researchers at the University of California looks beyond the exhaust pipe at the impact of transport on the environment.
By looking at the environmental impact of passenger transport – whether it be trains, planes or automobiles – beyond the exhaust fumes spewing from its collective tail pipe, researchers in the United States have discovered a significant spike in energy use and greenhouse gas emissions. By taking into account transport support systems – which includes sourcing raw materials, manufacturing, as well as the construction and 
maintenance of infrastructure – researchers at the University of California hope to provide a more detailed view for transport planners and policy makers. It will produce a better outcome for the environment.
The study can be found in the journal of Environmental Research Letters. Φ