London taxes older vehicles in bid to fight air pollution | KATV
Traffic, cars, bicycles and the limits of common sense
Cruise ships - Transport & Environment
Transportation Choices: Ranking the Cleanest Ways to Travel
The main sources of air pollution - Breeze Technologies
10 Possible Transportation Pollution Solutions | HowStuffWorks
Investing in public transit is a climate imperative | The Hill
Transportation Choices: Ranking the Cleanest Ways to Travel
Maricopa Air on Twitter: "#CommitToOneDay and help reduce air pollution by driving less. The Travel Reduction Program at MCAQD encourages residents to use alternative modes of transportation to help reduce air pollution.
Cars, planes, trains: where do CO2 emissions from transport come from? - Our World in Data
Even Low Levels of Air Pollution Could Be Bad for Mental Health | MedPage Today
African cities turn to 'green' buses in fight against pollution
Emerging practices in Low Emission Zones throughout Europe | Mass Transit
Pages - Transport pollution explained
Pollution Facts & Types of Pollution | Live Science