Hello world!

We are the Columbia University Clean Air Toolbox for Cities project. We are a large, interdisciplinary group of researchers at Columbia University working together to improve air quality in cities, with a special focus on cities in the Global South. Our group includes researchers from engineering, public policy, public health, law, Earth and environmental science, the Lamont-Doherty Earth Observatory, the Data Science Institute, and the Earth Institute. The Clean Air Toolbox is a science-based, collaborative approach to equipping cities with tools to protect human health by measuring and reducing air pollution risk.