America’s Dirtiest Carbon Polluters, Mapped to Ridiculous Precision

When it comes to fighting climate change, you can’t manage what you can’t measure. Under the Trump administration, U.S. efforts to track planet-warming carbon dioxide (CO2) emissions face an existential threat, but that isn’t stopping one team of researchers from producing this essential data.

In a study published Wednesday in the journal Nature Scientific Data, the team presented findings from the fourth version of Vulcan, a dataset that captures every source of CO2 emissions…