Data visualization plots showing the changing trends in outdoor concentrations of particulate matter (PM2.5) air pollution from 1850 to 2021 in cities around the world
The cleanest air in this time period is coloured light blue and the dirtiest is coloured brown. There are many types of air pollution, but we only show particulate matter (PM2.5) concentrations as these have been closely linked to effects on human health.
Includes funding from Ford, Hewlett, Luminate, MacArthur, OpenSocietyFoundation, and Chandler foundations totaling over half a billion dollars
MDS standardizes communication and data-sharing between cities and private mobility providers, such as e-scooter and bike-share companies.
Use this free tool from JustFix to research your building and investigate landlords! We use property ownership mapping to identify a landlord's portfolio
HXL is a different kind of data standard, designed to improve information sharing during a humanitarian crisis without adding extra reporting burdens.
