Today's air pollution is hard for people to understand because, unlike the “pea souper” fogs of old, its invisible.
We can now use our sensor data to enable people to visualise air pollution on google earth so they can "see" the air pollution from their cycle or walking routes.
Shown on the BBC on the 6th March, the videos below illustrate how powerful these can be in demonstrating exposure levels. The first video is a cyclist carrying a Zephyr®, the second a child carrying a Zephyr® - note how much the air pollution increases when the child stands next to an idling car.