Important context: 1) US federal government has removed vast troves of public data produced by the EPA, OSHA and the Interior Department. Source: https://www.

Important context: 1) US federal government has removed vast troves of public data produced by the EPA, OSHA and the Interior Department. Source: https://www.washingtonpost.com/politics/under-trump-inconvenient-data-is-being-sidelined/2017/05/14/3ae22c28-3106-11e7-8674-437ddb6e813e_story.html https://www.washingtonpost.com/politics/under-trump-inconven... 2) Google has now equipped Street View cars with air pollution sensors. Source: https://environment.google/projects/airview/ https://environment.google/projects/airview/ Conclusion: If we can no longer rely on getting accurate data from federal agencies, private companies with a public mission will need to gather the data and make it available.