We explore the cities of San Francisco and Boston using billions of data points collected via activity monitoring apps.
Tens of millions of self-tracking applications are used by people eager to monitor how many calories they consume, how many hours they sleep, how many steps they take.
By analyzing such data, we can start to understand the factors that influence outdoor human activity—such as weather, urban morphology, topography, traffic, the presence of green areas, etc. Click on the interactive app
to explore how we move in cities and how cities can keep us healthier and on the move.