Saddle Sense started as a King's College London dissertation and is now collecting nearly 1M data points from bike-mounted air quality sensors across London. The result? Street-by-street air pollution maps that help cyclists cut their exposure by 20-70%.
This is what citizen science looks like in practice: https://www.kcl.ac.uk/saddle-sense-real-time-air-quality-data-for-cyclists-by-cyclists
