Orcutt told Seattle Bike Blog that "you would be giving off more CO2 if you are riding a bike than driving in a car," although he admitted to having no evidence to back the claim. [underline mine.] You can’t just say that there’s no pollution as a result of riding a bicycle. . . the activity causes cyclists to have an increased heart rate and respiration.”Yes, there have been studies that show that biking is more environmentally friendly than driving a car, just in case common sense doesn't win the argument. A report documenting how to quantify C02 savings from cycling is featured on the Bike Portland blog, or click here if you want to read the entire report from the European Cyclists' Federation [downloads as PDF].
You can try this flow chart for debating with denialists, created as part of the Climate Desk collaboration. by James West who writes for Slate Magazine.
|James West, Slate Magazine|
and, good luck!