We’re glad you keep coming back. If Z’s work has informed, challenged, or inspired you, that’s no accident: there are no paywalls, no ads, and no billionaire owners here, and there never will be. Independent media survives because readers choose to support it.
In 1958, geochemist Charles David Keeling set up the Mauna Loa Global Monitoring Laboratory in Hawaii, which measured carbon dioxide (CO2). Keeling…