What does your bike mean to you? For those of us in the Western world, it’s a convenient way to get from A to B with exercise and environmental and social benefits thrown in. But in countries where the non-wealthy have little access to cars, bicycles double as taxis or even ambulances. Journalist and filmmaker Bojun Bjorkman-Chiswell is travelling the world to document the stories of our planet’s billion bicycles, raising awareness for bike users and uncovering extraordinary tales in the process – such as that of the bike ambulance driver in Zambia who is yet to be paid for his 20-hour-day efforts, or the unfortunate reality of the choking pollution in all the cities she’s visited so far. Bojun’s project is self-funded, but she’s asking for your help to keep the wheels spinning. You can view the videos she’s created so far and chip in to help her keep the cause going through Pozible here. You can also vote for One Billion Bicycles in the Cycling Visionaries awards here.