How serious is urban pollution for bicyclists?

Here's an irony if you commute by bicycle through city streets to improve your health:

A research paper says London bicycle commuters have 2.3-times more black carbon -- soot -- in their lungs than their pedestrian counterparts.

Bicyclists have long assumed they might be inhaling a little urban pollution when a bus passes by or they get stuck behind a fume-belching delivery van at a stop light.

Now the London-based researchers have put a number on it in a paper presented ...

Source: http://www.bikingbis.com/blog/_archives/2011/9/28/4908836.html

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Tour de Suisse ? Levi Leipheimer Laughs Last

The 9-Day, 1,245.9-kilometer (774+ mile) 75th edition of the Tour de Suisse is now in the record books. Traveling through some truly beautiful country, great old cities, serious alpine climbs, 3 countries, and numerous tricky switchbacks and tight turns, Team RadioShack?s members had not been setting many headlines. Sure there were some excellent performances, Andreas Klöden and Levi [...]

Source: http://www.teamradioshack.us/tour-de-suisse-levi-leipheimer-laughs-last/

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