For Cleaner Air, Get Out of the Car
London study finds that bike commuters are exposed to less air pollution than drivers
<a href="http://blogs.bicycling.com/blogs/thehub/for-cleaner-air-get-out-of-the-car">http://blogs.bicycling.com/blogs/thehub/for-cleaner-air-get-out-of-the-car</a>;